DIS- n.
from the same root as bis twice, and duo, E. two. See Two, and cf. Bi-, Di-, Dia-. Dis- denotes separation, a parting from, as in distribute, disconnect; hence it often has the force of a privative and negative, as in disarm, disoblige, disagree. Also intensive, as in dissever.
DISJUNCTIVE a.
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, et…