- unit
- unit [yo͞o′nit]n.[back-form. (prob. modeled on DIGIT) < UNITY]1.a) the smallest whole number; oneb) a magnitude or number regarded as an undivided wholec) the number in the position just to the left of the decimal point2. any fixed quantity, amount, distance, measure, etc. used as a standard; specif.,☆ a) a fixed amount of work used as a basis in awarding scholastic credits, usually determined by the number of hours spent in classb) the amount of a drug, vaccine, serum, or antigen needed to produce a given result, as on a certain animal or on animal tissues3.a) a single person, group, or thing, esp. as distinguished from others or as part of a wholeb) a single, distinct part or object, esp. one used for a specific purpose [the lens unit of a camera]c) a single residence, as an apartment, that is part of a complex [a rental unit]4. Mil. an organized body of troops, airplanes, etc. forming a subdivision of a larger body
English World dictionary. V. Neufeldt. 2014.