“Discursive (adjective): Covering a range of topics or discoursing freely and broadly, moving from subject to subject; characterized by rational analysis rather than intuition. Adverb: discursively; noun: discursiveness.
‘He published some of the best reporting—of an unofficial and personal kind—that was written about the war, and he elicited from Augustus John his delightful discursive memoirs, in which history is unimportant and chronology does not exist.’ Edmund Wilson, Classics and Commercials”
Excerpted from: Grambs, David. The Random House Dictionary for Writers and Readers. New York: Random House, 1990.