Webster 1913 Edition
disjunctivus: cf. F.
Tending to disjoin; separating; disjoining.
Pertaining to disjunct tetrachords.“Disjunctive notes.”
Moore (Encyc. of Music).
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.–
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.–
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.
A disjunctive conjunction.
A disjunctive proposition.
Webster 1828 Edition
2.Incapable of union. [Unusual.]
3.In grammar, a disjunctive conjunction or connective, is a word which unites sentences or the parts of discourse in construction, but disjoins the sense, noting an alternative or opposition; as, I love him, or I fear him; I neither love him, nor fear him.
4.In logic, a disjunctive proposition, is one in which the parts are opposed to each other, by means of disjunctive; as, it is either day or night. A disjunctive syllogism, is when the major proposition is disjunctive; as, the earth moves in a circle, or an ellipsis; but it does not move in a circle, therefore it moves in an ellipsis.