Terminology

Term	Description
Bay	A bay within a player's hangar. The number of bays determine the amount of units a player can have at one time.
BV	Acronym of Battle Value, which can refer to a unit's individual Battle Value or an army's total Battle Value, calculated as a total of all units within the army. Battle Value is a basic summary of a unit's worth, taking into account weight, weapons, speed, armor, pilot and skills and more.
BV Spread	Difference between the highest Battle Value unit in a given army and the lowest Battle Value unit within that army. Important for Army Construction.
C-Bills	One type of Resources for the player. C-Bills are the basic international currency within MekWars and the Inner Sphere.
Components	Used in Production by factories to manufacture new units for the a Faction.
ELO	Another term for Rating. See wikipedia's [Rating System] for more info on how it works. New players always start with 1600 Rating.
Faction	MekWar's analog of teams.
Flu	See influence.
Force Mod	An offset applied when the number of units on a side is dissimilar. The greater number force will have its BV increased, for the purpose of matching it up against the smaller force.
Influence	One type of Resources for the player. Influence is used as a sort of activity limiter, ensuring one player doesn't perform too many battles, unit purchases, etc in too short a time frame.
Landex	Land Exchange. Refers to the control of a planet and how much control is changed when a battle is won or lost.
RP (Reward Points)	One type of Resources for the player. Given to players after battles only, these can be used to repair or purchase new units, especially rarer units or units that the player's faction cannot necessarily acquire because of factory limitations.
Subfactions	A straightforward ranking system, affecting how deeply into the campaign a player is.
Tech	An engineer in a player's employ that repairs damaged units. See Hangar for more information.
Tick	A 15 minute unit of time on the MekWars server that is used to determine production and output, among other things.
Unit	Meks, vehicles, aerospace fighters, dropships, or infantry; what you use to fight with.