Definition of section noun from the Oxford Advanced Learner's Dictionary

section

noun

ˈsekʃn

ˈsekʃn

part/piece

1 [countable] any of the parts into which something is dividedThat section of the road is still closed.The library has a large biology section.the tail section of the plane

2 [countable] a separate part of a structure from which the whole can be put togetherThe shed comes in sections that you assemble yourself.

of document/book

3 [countable] a separate part of a document, book, etcThese issues will be discussed more fully in the next section.the sports section of the newspaperThe report has a section on accidents at work.

group of people

4 [countable] a separate group within a larger group of peoplean issue that will affect large sections of the populationthe brass section of an orchestra see also rhythm section

of organization

5 [countable] a department in an organization, institution, etc.

Synonym

divisionHe's the director of the finance section.the section of the company dealing with customer services

district

6 [countable] (North American English) a district of a town, city or countythe Dorchester section of Bostonone of the city's most affluent sections

measurement

7 [countable] (North American English) a measure of land, equal to one square mile

diagram

8 [countable] a drawing or diagram of something as it would look if it were cut from top to bottom or from one side to the otherThe illustration shows a section through a leaf.The architect drew the house in section. see also cross section

medical

9 [countable, uncountable] (medical) the act of cutting or separating something in an operationThe surgeon performed a section (= made a cut) on the vein. see also Caesarean10 [countable] (medical, biology) a very thin flat piece cut from body tissue to be looked at under a microscopeto examine a section from the kidney