apartment Definition

apartment
noun

1. A single room in a house or flat.
2. A set of rooms used for accommodation, usually in a large building.

Thesaurus: rooms, living quarters, flat, condominium, penthouse, tenement, suite, lodgings, pad (slang).
Form: apartments
(N Amer)
3. A self-contained set of rooms for living in, usually all on one floor, in a large building that is divided into a number of similar units. Brit equivalent flat 2.

Etymology: 17c: from French appartement, from Latin appartire to apportion.