\Dis*junc"tive\, a. [L. disjunctivus: cf. F.
disjonctif.]
1. Tending to disjoin; separating; disjoining.
2. (Mus.) Pertaining to disjunct tetrachords. ``Disjunctive
   notes.'' --Moore (Encyc. of Music).
{Disjunctive conjunction} (Gram.), one connecting
   grammatically two words or clauses, expressing at the same
   time an opposition or separation inherent in the notions
   or thoughts; as, either, or, neither, nor, but, although,
   except, lest, etc.
{Disjunctive proposition}, one in which the parts are
   connected by disjunctive conjunctions; as it is either day
   or night.
{Disjunctive syllogism} (Logic), one in which the major
   proposition is disjunctive; as, the earth moves in a
   circle or an ellipse; but in does not move in a circle,
   therefore it moves in an ellipse.

\Dis*junc"tive\, n.
   (a) (Gram.) A disjunctive conjunction.
   (b) (Logic) A disjunctive proposition.