adj. & n.
--adj.
1. involving separation; disjoining.
2 Gram. (esp. of a conjunction) expressing a choice between two words etc., e.g. or in asked if he was going or staying (cf. COPULATIVE).
3 Logic (of a proposition) expressing alternatives.
--n.
1. Gram. a disjunctive conjunction or other word.
2 Logic a disjunctive proposition.
Derivatives:
disjunctively adv.
Etymology: ME f. L disjunctivus (as DISJOIN)