top.ic

topic的音标和读音：
DJ音标发音： [ˈtɔpik]
KK音标发音： [ˈtɑpɪk]

topic的词性：
n.（名词）

1. The subject of a speech, an essay, a thesis, or a discourse.
主题：一篇讲话，文章、论文或研讨的题目

2. A subject of discussion or conversation.
话题：讨论或交谈的主题

3. A subdivision of a theme, a thesis, or an outline.See Synonyms at subject
标题；细目：主题，论文或提纲下面的副标题参见 subject

topic的词源：

4. Obsolete topic [rhetorical argument] [sing. of] Topics [title of a work by Aristotle]
废语 topic [修辞学的辩论] [] Topics的单数 [亚里斯多德一部作品的标题]

5. from Latin Topica
源自 拉丁语 Topica

6. from Greek Topika [commonplaces] [from neuter pl. of] topikos [of a place]
源自 希腊语 Topika [平凡的，平常的] [] 源自topikos的中性复数 [某一地方的]

7. from topos [place]
源自 topos [地方]