American English

Definition of section noun from the Oxford Advanced American Dictionary

        

    section

     noun
    noun
    NAmE//ˈsɛkʃn//
     
     
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    part/piece
  1. 1[countable] any of the parts into which something is divided That section of the road is still closed. The library has a large biology section. the tail section of the plane
  2. 2 [countable] a separate part of a structure from which the whole can be put together The kit comes in sections that you assemble yourself.
  3. of document/book
  4. 3[countable] a separate part of a document, book, etc. These issues will be discussed more fully in the next section. the sports section of the newspaper The report has a section on accidents at work. Section 7 of the Endangered Species Act (= the 7th part of a legal document)
  5. group of people
  6. 4[countable] a separate group within a larger group of people an issue that will affect large sections of the population the brass section of an orchestra see also rhythm section
  7. of organization
  8. 5[countable] a department in an organization, institution, etc. synonym division He's the director of the finance section. the section of the company dealing with customer services
  9. district
  10. 6 [countable] a district of a town, city, or county the Dorchester section of Boston one of the city's most affluent sections
  11. measurement
  12. 7 [countable] a measure of land, equal to one square mile
  13. diagram
  14. 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 other The illustration shows a section through a leaf. The architect drew the house in section. see also cross section
  15. medical
  16. 9[countable, uncountable] (medical) the act of cutting or separating something in an operation The surgeon performed a section (= made a cut) on the vein.
  17. 10[countable] (informal) = cesarean
  18. 11[countable] (medical) (biology) a very thin, flat piece cut from body tissue to be looked at under a microscope to examine a section from the kidney
See the Oxford Advanced Learner's Dictionary entry: section