Subchapter

Part of speech: noun

Definitions

1. A part of a chapter that addresses a distinct topic within the broader theme of a written work
2. A detailed segment within a chapter that explores a specific issue related to the overall content
3. A smaller section of a chapter that focuses on a particular topic or aspect within the greater subject

Etymology: "Subchapter" is a plain English compound: the prefix "sub-", meaning "under" or "below," attached to "chapter." It adds nothing mysterious to the base word, so the interest lies in the chapter it modifies. "Chapter" has a striking origin. It comes from Latin "caput," meaning "head," which gave Latin the diminutive "capitulum," a little head or a heading. Medieval Latin used "capitulum" for a short division of a text, and Old French turned it into "chapitre." English borrowed that form in the Middle Ages as "chapitre," and the word settled into "chapter." A section of a book is thus, etymologically, a little head at the top of a passage. The sense of "chapter" as a division of a book was therefore already present in its ancestor, which is why "subchapter" works so naturally. The "sub-" prefix, descended from Latin "sub" meaning "under," marks a smaller unit placed beneath a main division. A subchapter is, in effect, a little head beneath a bigger head.

Synonyms: section, division, segment

Antonyms: whole, entirety