English Reference

Word

apartment

Phoneticsapart·ment

US/əˈpɑɹtmənt/

UK/ɐpˈɑːtmənt/

Definitions

01a home

A1 · Beginner Countable noun American English

n. a set of rooms where you live that is part of a larger building.

n. a self-contained housing unit that occupies only part of a building. Standard in American English; 'flat' is the preferred term in British English.

“They moved into a modern apartment on the fourth floor of the building.”

“The developer converted the historic warehouse into luxury apartments, retaining the original brickwork and high ceilings to attract young professionals.”

Usage

Usually countable; often used with 'in' or 'at'.

Pitfall

I live in a small apartment of three rooms.

I live in a small three-room apartment.

In English, we usually put the number of rooms before the word 'apartment' as an adjective, rather than using 'of'.

Synonyms

Antonyms

02computing/threading

C1 · Advanced Countable noun Computing Technical

n. a private space in a computer program that keeps different tasks separate so they do not crash.

n. a logical container within a process for objects sharing the same thread access requirements. Used to manage concurrency and prevent data corruption.

“The program uses a single-threaded apartment to handle the user interface.”

“When developing COM components, the programmer must decide whether the object will reside in a single-threaded or multi-threaded apartment to ensure thread safety.”

Usage

Commonly used in the context of Component Object Model (COM) programming.

Synonyms

Confusables

apartment vs flat

Flat is the standard British term for a self-contained home on one floor, while apartment is the preferred American term.

RememberFlat = British. Apartment = American.

Etymology

From French appartement, from Italian appartamento, from Spanish apartamiento (“separation, seclusion”). See apart.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

Related words

The word in film

The Apartment · 1960 · Comedy

Directed by:
Billy Wilder
Starring:
Shirley MacLaine, Jack Lemmon, Fred MacMurray

Billy Wilder directed this classic comedy about an office worker who lets his bosses use his private home for their secret romantic meetings. Jack Lemmon stars as the lonely employee who hopes that lending out his keys will help him get a promotion at work.

Domain

Computing

This entry

Exam level
CambridgeCambridgeCambridge English QualificationsThe exam suite from Cambridge University Press & Assessment, from A1 Movers up to C2 Proficiency. The benchmark names double as CEFR labels.A1 MoversIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.2.0–3.0TOEFL iBTTOEFL iBTTest of English as a Foreign Language, Internet-Based TestETS's academic English test, the standard route for US university admissions. Scored 0–120, with a 1–6 scale since 2026.1–6 scale: 1.0–1.50–23TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.120–224
Frequency
Common
Level
A1 · BeginnerOxford
Updated

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