a. [ L. disjunctus, p. p. of disjungere to disjoin. See Disjoin, and cf. Disjoint. ] 1. Disjoined; separated. [ R. ] [ 1913 Webster ]

2. (Zool.) Having the head, thorax, and abdomen separated by a deep constriction. [ 1913 Webster ]

Disjunct tetrachords (Mus.), tetrachords so disposed to each other that the gravest note of the upper is one note higher than the acutest note of the other. [ 1913 Webster ]

n. [ L. disjunctio. ] 1. The act of disjoining; disunion; separation; a parting; as, the disjunction of soul and body. [ 1913 Webster ]

2. A disjunctive proposition. Coleridge. [ 1913 Webster ]

a. [ L. disjunctivus: cf. F. disjonctif. ] 1. Tending to disjoin; separating; disjoining. [ 1913 Webster ]

2. (Mus.) Pertaining to disjunct tetrachords. “Disjunctive notes.” Moore (Encyc. of Music). [ 1913 Webster ]

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, a proposition in which the parts are connected by disjunctive conjunctions, specifying that one of two or more propositions may hold, but that no two propositions may hold at the same time; 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. [ 1913 Webster ]

n. (a) (Gram.) A disjunctive conjunction. (b) (Logic) A disjunctive proposition. [ 1913 Webster ]

adv. In a disjunctive manner; separately. Dr. H. More. [ 1913 Webster ]

n. The act of disjoining, or state of being disjoined; separation. Fuller. [ 1913 Webster ]