Definition of "discussion" in English

noun

1. Conversation or debate concerning a particular topic.

   • There was then a long discussion of whether to capitalize words like "east".
   • This topic is not open to discussion.
   • My discussion with the professor was very enlightening.

2. Text giving further detail on a subject.

   • Under each heading, you will find a discussion.

3. (medicine, obsolete) The dispersion of a tumour.