subsection

/ˈsʌbˌsɛkʃən/
noun
  1. A smaller part or division of a section, especially in a document, law, or organized system.
    • The report is divided into sections, and each section has several subsections.
    • Please read subsection 3.2 of the contract before signing.
    • In the library, the history books are organized by subsection according to time period.
Antonyms
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