Word
back end
Definitions
01software/hardware systems
B2 · Upper Intermediate Computing Technical
adj. describing the parts of a computer program or website that handle data and logic behind the scenes.
adj. relating to the server-side or internal logic of a software application, typically involving databases and APIs that the end-user does not interact with directly.
“The team is looking for a back-end developer to manage their database.”
“The back-end architecture was redesigned to handle the sudden influx of traffic without compromising the integrity of the user data.”
Usage
Usually hyphenated when used as an adjective before a noun.
Synonyms
Antonyms
02the hidden part of a system
B2 · Upper Intermediate Countable noun Computing Technical
n. the part of a software system that users do not see or interact with.
n. the portion of a system or application that is responsible for data storage, security, and processing logic.
“We need to update the back-end to make the website load faster.”
“While the interface looks modern, the back-end is built on legacy code that requires significant maintenance.”
Usage
Often written as two words ('back end') when used as a noun, though the hyphenated form is common in technical documentation.
Synonyms
Word family
ADJECTIVE
Domain
- 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.B2 FirstIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.5.5–6.5TOEFL 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: 4.0–4.572–94TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.785–944
- Frequency
- Very common
- Level
- B2 · Upper Intermediate
- Updated
- アルファベット
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QR code
englishreference.com/q/back-end