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topic definition


This page has 6 definitions of topic in English. Topic is an adjective and noun. Examples of how to use topic in a sentence are shown. Also define these 0 related words and terms: .

See also: topić, tòpic, topíc, and topič


Alternative forms


From Latin topica, from Ancient Greek τοπικός (topikós, pertaining to a place, local, pertaining to a common place, or topic, topical), from τόπος (tópos, a place), of Pre-Greek origin.




  1. topical


topic (plural topics)

  1. Subject; theme; a category or general area of interest.
    A society where a topic cannot be discussed, does not have free speech.
    stick to the topic
    an interesting topic of conversation
    romance is a topic that frequently comes up in conversation
  2. (Internet) Discussion thread.
  3. (music) A musical sign intended to suggest a particular style or genre.
    • 2012, Esti Sheinberg, Music Semiotics (page 9)
      In Peircean terms, topics are interpretants: signifieds that become new signifiers in the endless semiotic chain of interpretations.
  4. (obsolete) An argument or reason.
    • 1675, John Wilkins, Of the Principle and Duties of Natural Religion
      contumacious persons, who are not to be fixed by any principles, whom no topics can work upon
  5. (obsolete, medicine) An external local application or remedy, such as a plaster, a blister, etc.


  • (area of interest): subject, subject area

Derived terms


Further reading