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This page provides a guide on common terms used in Star Trek Online. See the relevant articles for more details. use Ctrl+F to search for a partial term. Some terms used by players to refer to certain skills can be found on Acronyms.

Term Description
Ability Powers which can be activated (clickable in the tray) in space or on the ground.
Accolade Special accomplishments your captain can achieve. There are unlocks for progressing through the normal storyline, as well as unlocks for exploration of the galaxy.
Accuracy Refers to player's chance to hit a target in space combat. Accuracy mechanic interacts with the target's Defense, which is a capability to evade a hit.
Admiralty System Allows characters to use their starships in assignments, which makes it similar to the Duty Officer System. However, any ship can be used in any assignment.
Adventure zone A large, continuous map containing a number of mini-missions the players can complete. Aside from being either ground- or space-based, adventure zones vary substantially in their look and feel, with some being more story-driven and less action-heavy (e.g., New Romulus), and some focused on faster-paced combat (e.g., the Tholian Incursion).
Aggro Aggro is a jargon word in MMORPGs, probably originally derived from the English words "aggravation" or "aggression". Aggro denotes the aggressive interests of a monster/NPC. To draw aggro, is to draw the fire of an enemy towards you.
Area of Effect (AoE) Describes a skill or attack that impacts not a specific target, but an area of the map (impacting anything within that area).
Away team A group of a player captain and up to four other players or Bridge Officers. Most ground missions are designed for away teams of five players or bridge officers.
Battlezone Large maps which have player groups fight the enemy for control over areas of the map by fulfilling specific tasks within given time-frames. After a boss mob, which spawns after the players gained control over the entire map, is defeated, the battlezone is reset.
Bind on Equip A term for any item that is bound to a player upon equipping it to a ship or character.
Bind on Pickup An item attribute, meaning that the item is bound to that player once it has been picked up and placed in Inventory.
  • Bind on Pickup: an MMORPG term meaning an item is bound to your character when you obtain it.
  • Bird-of-Prey: A Klingon and Romulan ship type.
Boss A high level enemy NPC. An encounter with a boss is referred to as a boss fight, and is usually intended to be a focal point of a mission.
Bound An item attribute which means it cannot be moved off the character or account. Something "bound to account" means you cannot sell or trade it to other players. "Bound to character" means you also cannot transfer it to other characters on your account.
Bridge officer (Boff) A commissioned member of the player's bridge crew, which are listed on the left of the Character Status window. While merely serving as pools for abilities in space combat, up to four BOffs can fully join a player's away team in ground combat, offering both abilities as well as firepower.
Bridge Officer Slot A slot on a player character for commissioned Bridge Officers. Additional slots can be purchased, allowing for more bridge officers to be commissioned by the player.
Buff A trait, skill, or item that permanently or temporarily benefits the player.
Calendar event Calendar events are windows of opportunity during which you either gain discounts or bonuses when completing specific tasks or gain access to certain content.
Captain Specialization Captain and Bridge Officer Specializations are, in addition to the skill and trait systems, a key to individualizing and specializing your character and Bridge Officers after level 50.
Career path During character creation players may choose one of three career paths they wish to follow (Tactical, Engineering, Science).
Character Slot A slot allowing you to create a player character. Additional slots may be purchased allowing for extra characters to be created.
Character Status Accessed by pressing “U” on the keyboard (by default), or by clicking the Character Status icon on the minimap. It displays detailed information about the player character and commissioned Bridge Officers.
Combat A core mechanic of Star Trek Online across space and ground maps. The game is rare in having both a fully-fledged space and ground combat system throughout the game.
Confuse A type of debuff that causes targets to themselves randomly target other objects, either friend or foe. It is similar to placate, in that it generally causes targeted foes to stop targeting the player. It is however distinct from placate as a confused foe will still be able to target the player, albeit less easily.
Critical Hit A hit on an enemy that deals additional damage.
Cross-Faction Content Content, such as missions or starships, which are available to both Federation-aligned and Klingon-aligned characters.
Currency Spent at vendors for gear and cosmetics. In-game currencies include Energy credits, Dilithium, Reputation marks, Zen and Lobi Crystals.
Daily (Dailies) Missions repeatable every 20 hours.
Damage over Time (DoT) Describes effects that cause enemy players damage over intervals (also known as ticks). A DoT would be the damage over time effect of a Plasma Grenade.
Damage resistance A defensive statistic of a character or starship. It is multiplied with the incoming damage of the same type. Players obtain damage resistance through items, like consoles and body armor, as well as skills, traits, and abilities.
Debuff A trait, skill, or item that permanently or temporarily harms your enemy.
Deep Space Encounter Nodes appearing at random intervals and at random locations in sector space. They appear for 5 minutes and give access to an otherwise empty space map containing six groups of a randomly selected enemy. They are indicated as red exclamation marks.
Dilithium A major currency predominantly earned and used in the end game. Players can use dilithium to purchase various things ranging from new ships when the player reaches a new rank to new officers, equipment (Space and ground), upgrading or re-engineering equipment, and via crafting materials.
Dilithium Exchange Allows trading of Zen for Dilithium and vice-versa. Exchange rates depend on how much of one currency players are willing to trade for another, and such rates may fluctuate from moment to moment.
Diplomacy A type of non-combat gameplay earning Diplomatic Experience (DXP Cxp diplomatic icon.png) by completing

Diplomacy is only accessible for Federation-aligned characters. The corresponding branch for Klingon-aligned characters is called Marauding.

Damage Per Second (DPS) An average value of how much damage a weapon or ability can do each second, and is derived from dividing the amount of damage done per volley ("DPV") by the recharge time. For example, if a weapon does 28 Phaser Damage and has a recharge time of 1.5 seconds, its DPS value would be 28 ÷ 1.5, or 18.67 DPS (rounded to 19 DPS in-game).
Duty officer (doff) Duty officers represent the junior officers, enlisted personnel, and civilian crew members of the player's starship. These officers can be sent on missions or slotted for bonuses.
End game End game or Endgame refers to the state of the game for player characters at the maximum level. The current maximum level (also referred to as the level cap) is level 65. Players at end game are not considered to have completed the game, but rather to have reached a milestone where their character is no longer gated by a lack of seniority.
Endeavor System A system offering challenges to players such as dealing damage of a certain type, healing or defeating certain classes of enemies. Completion of tasks earns special rewards and bonuses.
Energy credit The main form of currency used to purchase various things ranging from new ships when the player reaches a new rank to new weapons (Space and ground), deflectors and shields. These credits are obtained by various means, including (but not limited to) completing missions and selling items to merchants.
Episode A story-focused mission found in the Mission Journal. Historically, Episode has referred to the story arc (e.g. Iconian War), but since feature episodes became common, it refers more to single stories.
Equipment Gear equipped to the player character, boff or ship which provide different stats and, in some cases, abilities.
Experience Point Granted by playing almost any content, e.g., defeating NPC or player enemies, completing missions/assignments, and so on. Their accumulation causes the player to level up, i.e., increase in rank. They earn points to spend in the player's skill tree.
Expertise Used as a cost for applying a Training Manual on a bridge officers, teaching them new abilities. It is earned through most content.
Exploit attack An attack which delivers increased damage and if used on an exposed target whose health is low enough will kill the target, vaporising them.
Expose attack Attacks which put the target in a vulnerable state, making them more susceptible to damage and increasing the effectiveness of exploit attacks.
Factions Interstellar states or associations; often composed or dominated by a single race but sometimes consisting of thousands. Playable factions (such as Starfleet and the Klingon Defense Force), are used by the player to create characters whereas most factions are only encountered by the player.
Federation-aligned Characters who are tied to the Starfleet faction in terms of hub and ship access, and content limited to them.
Fleet STO's equivalent of the MMO "Guild", fleets are bands of up to 500 players who contribute resources towards common projects to earn special equipment and hubs.
Fleet Credit Earned by contributing to Fleet projects and can be spent in special fleet stores.
Fleet Mark A currency earned from Task Force Operations and spent on fleet projects.
Gear Upgrade System Enables players to improve the quality of their gear items by increasing both their mark and quality.
Griefing A term used to describe harassment toward another player.
Hazard An area-of-effect left behind by an ability that cause damage or some other effect on a periodic basis, but only if you remain within the affected radius.
Heal Any player or Bridge Officer Ability or any item that acts to reverse the effects of taking damage.
Heal over Time (HoT) Aterm used to describe a beneficial effect given to yourself, your target or/and multiple targets and provides a healing effect in intervals.
Health A Hit Point is a gound based unit of health.
Hub (social zone) A non-mission map where players can gather to access services, buy from vendors begin missions and interact with each other. Hubs do not include combat and rarely include missions outside of tutorials.
Hull The body of your starship. Your hull strength is the overall health of your starship in space combat, comparable to Hit Points in ground combat.
Injury A "punishment" given when a character is incapacitated. Upon "death", there is a chance of receiving one injury (on the captain, bridge officer or ship, as applicable). If any injury occurs, the severity of it is determined by chance, modified by the existence of any existing injuries on that character.
Klingon-aligned Characters who are tied to the Klingon Defense Force faction in terms of hub and ship access, and content limited to them.
Level See Rank
Mark (Mk)
  • Item: Corresponds directly to the minimum rank a player must hold in order to be able to equip the item. The higher the mark number, the greater the items' abilities, and the higher the minimum level of the player that is allowed to equip this item.
  • Currency: Reputation and Fleet marks are earned from Task Force Operations and spent on special projects.
Mini-game A game within another game, both very limited in scope and time exposure. Examples include Dabo or Radiation Scan.
Mission The equivalent of the MMO "Quest". Most tasks and stories are in the context of a mission, which come in many forms.
Mission Journal It provides access to Episodes and Events.
MMORPG Stands for Massively Multiplayer Online Role-Playing Game: a combination of RPG (assuming the role of a character) and MMO (a large persistent online world hosting hundreds of players over the internet).
Mob Generally the term refers to a group of generic, hostile NPCs.
Modifier (Mod) A particular bonus on equipment such as "[Acc]", improving the item's accuracy rating. Higher quality items have more modifiers.
Normalized Indicates that a stat in an item or ability tooltip is unmodified by other equipment, traits, skills, etc.
Non-Player Character (NPC) Members of the game world that are entirely controlled by the game (as opposed to another player). Examples of NPCs would include vendors and mission givers.
Personal traits Selectable for each player and can be changed in-game whenever out of combat. While several Personal traits are available to all characters, many are race-specific, career-specific, or unlockable.
Pet A small NPC that can be summoned. Combat pets can be called to aid in a fight. Non-combat pets are purely cosmetic.
Placate A type of debuff that makes the player untargetable to the placated foe for the duration of the ability.
Playable starship A starship commanded by the player, which is as much a part of a player's avatar as their Captain. The abilities and stats of a starship are determined by the starship's tier, type, the equipment loadout, traits, bridge officers and power system management.
Player character ("Captains") Players are personified by their character's avatar who plays the story in one of the game's factions. On space maps, they are represented by one of their starships, albeit with their "Captain" commanding it.
Player versus environment (PvE) Content pitting the player against NPCs and tasks. This is the majority of content in game.
Player versus player (PvP) Content pitting the player against other players (i.e. having players directly fire upon one another in order to secure victory).
Proc A special effect or bonus that is activated on a piece of equipment, generally with a low percentage chance to happen.
Quality Indicates how rare it is to find it and how many modifiers an item has.
Raid An MMO term used to describe a Task Force Operation.
Rank The level of a character or NPC. Ranks are taken from those ranks used in Star Trek. Higher ranks denote more powerful NPCs and unlock new abilities and systems to the player.
Re-engineering Allows an item's modifier to be re-rolled at a scaling cost of Dilithium and Salvage. The re-rolling is random, but it will not re-roll to the existing modifier.
Replicator Part of the personal inventory to create or recycle items in exchange for Energy Credits.
Reputation System Allows characters to progress their reputation with in-game factions such as Task Force Omega or Iconian Resistance. Each reputation includes various Sets, Traits, and other assorted gear among its tiers.
Reputation traits Traits are unlockable by advancing through the tiers of the factions in the Reputation System. Tiers one through five each unlock two traits, one for ground, and one for space combat; tier 5 grants one active trait, i.e. a clickable ground or space ability, depending on the respective reputation faction.
Research and Development (R&D) The game's crafting mechanic. It uses R&D Materials to create R&D Components, both of which are in turn needed to craft various items, including "tech upgrade kits" that can be used to improve already existing items.
Respec (Retraining) The partial or complete alteration of a player's skill tree.
Salvage A currency used in Re-engineering of items to change their mods. Equipment obtained from loot drops may be salvaged by selecting "Salvage" from the contextual menu, next to Discard. Salvaging an item destroys it to reward both the Salvage currency and additional Research and Development Materials.
Season Analogous to is a significant game patch introducing new features or content. These content updates are called seasons in Star Trek Online in reference to the television show. Season numbering has remained consistent between PC and Console releases, despite seasons 1-11 being released at launch for console.
Sector A unit of spatial measurement with a size of 20x20x20 light years, and is a subdivision of a quadrant in the Milky Way. Each sector contains several objects, first and foremost star systems, and is navigable via sector space, which is like an overview map.
Sector space An overview map containing all accessible sectors within a quadrant of the Milky Way Galaxy. Travel via sector space represents the starship at warp, and the desired destination can either be reached by selecting it from a list in the map menu, clicking it on the overview map, or by manually steering toward it.
Ship Interior (or bridge) Roughly analogous to housing in other MMOs. However, the functionality and customization of interiors is limited.
Skill Comparable to talents and talent trees of other MMORPGs. Skills improve existing abilities and/or grant passive bonuses by spending points on them.
Spam The rapid, repeated use of the same item or action. E.g. chat spamming is the repetition of a word or line typed out by a player using a game's chat system.
Starship Mastery A form of leveling progression tied to a specific tier 5-U or 6 playable starship. As your captain gains experience points in space combat, your starship will also gain Starship Mastery experience points. This unlocks increased stats and, for T6 ships, new traits.
Starship traits Traits unlocked mainly through Starship Mastery of a particular ship. The player can activate several traits earned at one time.
System / System Space Can refer to any entry point in sector space, such as a space station or an anomaly, independently from its nearby star. Distinguished from sector space, system space involves story and objectives.
Task Force Operation Queued content which makes up most of the game's multiplayer content. They are missions that require five or players to complete objectives in order to complete the mission.
Tick Used to describe an event occuring at a specific time based on something that generally has a longer time period than one tick.
Time to Live (TTL) A metric used to quantify a player's survivability assuming no healing is performed.
Training Manual Items that grant Bridge Officers access to new abilities.
Trait Add extra bonuses to attributes or abilities of your game character. Most traits are passive bonuses, but some also include a special ability your character can activate. Each passive trait either gives a bonus for ground or for space combat.
Trophy Special accomplishments can be displayed in most Ship Interiors.
Tutorial The first few missions for each faction. With the help of several tooltip pop-ups, the player is slowly introduced to the game's UI and mechanics of ground and space combat.
User interface (UI) The controls and information presented to the player.
Vendor Any NPC that sells and purchases items from the player.
Voice acting / Voiceover (VO) Audio recording of an actors voice reading the NPCs lines. Usually in the context of a celebrity reprising their role from the show.
War Zone Continuous "PvEvP" zones accesible for players of all factions and levels. There is a ground and a space map, accessible from two different star systems each. War Zone play becomes accessible at level 5, and access is divided by ten level increments after level 10.
Warp speed The term for travelling at faster-than-light velocity through a warp drive propulsion system. It is the principal mode of transport in Star Trek, being used by all space-faring factions. Starships travel at warp speed in sector space and the warp speed scale is linear (i.e. warp 8 is twice as fast as warp 4). You can see your current warp speed while in sector space by moving the cursor over your ship throttle.