—n. 1. communication of thought by words; talk; conversation: earnest and intelligent discourse. 2. a formal discussion of a subject in speech or writing, as a dissertation, treatise, sermon, etc.
3. Ling.any unit of connected speech or writing longer than a sentence.
—v.i. 1. to communicate thoughts orally; talk; converse.
2. to treat of a subject formally in speech or writing.