The Collaborative International Dictionary
Discretive
Discretive \Dis*cre"tive\, a. [L. discretivus. See Discrete.] Marking distinction or separation; disjunctive.
Discretive proposition (Logic & Gram.), one that expresses distinction, opposition, or variety, by means of discretive particles, as but, though, yet, etc.; as, travelers change their climate, but not their temper.
Wiktionary
discretive
a. Marking distinction or separation; disjunctive.