English Reference

Word

section

Phoneticssec·tion, stress on the first syllable

US/ˈsɛkʃən/

UK/sˈɛkʃən/

Definitions

01a part of a whole

A2 · Elementary Countable noun

n. one of the parts that something is divided into.

n. a distinct part or subdivision of a larger object, entity, or concept.

“The library has a large section dedicated to local history and old maps.”

“The residential section of the city has seen significant investment in public parks and cycling infrastructure over the last decade.”

Antonyms

02part of a document

B1 · Intermediate Countable noun Law Academic · Formal

n. a specific part of a book, report, or legal document.

n. a distinct, often numbered or titled, portion of a written work or legal statute.

“Please read the first section of the contract before you sign it.”

“Under section four of the new legislation, small businesses are eligible for a significant reduction in annual licensing fees.”

03a cross-section view

B2 · Upper Intermediate Countable noun Science Technical

n. a drawing that shows what the inside of something looks like if you cut through it.

n. a representation of an object as it would appear if cut through by an intersecting plane.

“The diagram shows a section of the human heart to explain how blood flows.”

“The geological section revealed several distinct layers of sedimentary rock, providing a clear timeline of the region's environmental shifts.”

Synonyms

profilecross-section

04orchestra group

B1 · Intermediate Countable noun Music

n. a group of similar instruments in an orchestra.

n. a group of players in an orchestra or band who play the same family of instruments.

“The brass section was very loud during the final part of the symphony.”

“The conductor asked the string section to play with more delicacy during the second movement to allow the woodwinds to be heard.”

Synonyms

05military unit

B2 · Upper Intermediate Countable noun Military

n. a small group of soldiers that is part of a larger team.

n. a small tactical military unit, typically consisting of ten to fifteen soldiers.

“The sergeant led his section through the forest during the training exercise.”

“The infantry section was tasked with securing the bridgehead until the rest of the platoon could arrive with heavy equipment.”

Synonyms

06to divide into parts

B2 · Upper Intermediate

v. to cut or divide something into smaller pieces.

v. to divide or separate something into distinct parts or segments.

“The chef sectioned the orange before adding it to the salad.”

“The land was sectioned into smaller plots to be sold to individual developers for the new housing project.”

Antonyms

07medical commitment

C1 · Advanced Medicine British English · Formal

v. to officially send someone to a mental hospital because they are not safe.

v. to compulsorily admit a person to a psychiatric hospital under a specific legal act.

“The doctor decided to section the patient for their own safety.”

“After a thorough psychiatric evaluation, the authorities determined it was necessary to section the individual under the Mental Health Act.”

Usage

Often used in the passive voice: 'to be sectioned'.

Teaching tip

This is a very specific legal and medical term in the UK; in the US, people might say 'involuntarily committed' instead.

Synonyms

commithospitalise

Antonyms

Collocations

Common phrases and expressions where native English speakers use the word “section” in context.

01. conclude section 02. cross section 03. discussion section 04. following section 05. preceding section 06. previous section 07. separate section

Etymology

From Middle English seccioun, from Old French section, from Latin sectiō (“cutting, cutting off, excision, amputation of diseased parts of the body, etc.”), from sectus, past participle of secāre (“to cut”). More at saw.

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

Word family

Domains

ArchaeologyAviationBotanyEducationGeologyLawMedicineMilitaryMusicSurgeryTechnologyZoology

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
Very common
Level
A1 · BeginnerOxford
Updated

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English Reference