i.k.s - A three-letter acronym that was used as a prefix for Klingon ships.
I.R.W. - Imperial Romulan Warbird
iconia - The homeworld of a very advanced, extinct race known as the Iconians.
IGE - Infected Ground Elite
IGN - Infected Ground Normal
IIRC - If I Recall Correctly
IKS - Imperial Klingon Ship
imaging - To make a representation of something.
imaging chamber - A medical device used to do full body scans of patients.
IMO - In my opinion
impossible task - Something that cannot be accomplished.
improvement - to make something better
impulse - A sub-light speed used for travelling shorter distances. It is slower than warp speed.
impulse power - The energy used to control how fast a starship goes at sub-light speeds.
impulse speed - A sublight speed which ships traveled at.
imzadi - A Betazed word meaning beloved.
inaprovaline - A medicine that was used as a preventative measure or in response to various physical illness.
inertia - When an object that is in motion continues to stay in motion until it is stopped.
inertial - Relating to inertia, which is a law that states an object in motion will stay in motion.
inertial dampeners - A system used on starships to counter the effects of inertia when rapidly increasing or decreasing speed.
inertial damper - A system used on almost all starships to counter the effects of rapid acceleration and deceleration of a starship.
inertial dampers - A device in starships which weakened the affect of inertia within the ship.
infinite - limitless, never ending
injuries - In Star Trek Online, when playing in advanced or elite mode your captain and bridge officers can obtain injuries when they are "killed". These injuries will hurt the performance of the captain or bridge officer that obtained it. You can cure injursies using regenerators.
Ins - Star Trek IX: Insurrection
insulator - A material used to prevent the passage of something else such as electricity or sound.
interlink - To join or connect multiple things together.
internet - A connection of computers in a network in which information can be shared.
interphasic - Refers to an overlap of parallel universes or dimensions.
interplanetary - between planets
ion - An atom that has gained or lost one or more electrons and has thereby acquired a net electric charge.
iou - A signed document acknowledging a debt.
IP - 1) Intellectual Property; 2) Internet Protocol
IRW - Imperial Romulan Warship
ISE - Infected Space Elite
ISN - Infected Space Normal
isolinear - A technology used by the Federation to develop circuitry.
Isometric Charge - A console from the Vor'cha Battle Cruiser Refit which unleashes an isometrically charged electrical attack that chains to other nearby targets.