Pronunciation: (top'ik), [key]
1. a subject of conversation or discussion: to provide a topic for discussion.
2. the subject or theme of a discourse or of one of its parts.
3. Rhet., Logic. a general field of considerations from which arguments can be drawn.
4. Also called theme. Ling.the part of a sentence that announces the item about which the rest of the sentence communicates information, often signaled by initial position in the sentence or by a grammatical marker. Cf. comment (def. 6).
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.