noun

1. an inferring, theorizing, or predicting from incomplete or uncertain evidence; guesswork an editorial full of conjecture
2. an inference, theory, or prediction based on guesswork; guess
3. Obsolete occult divination

Etymology: ME < L conjectura, a putting together, guess, inference < conjectus, pp. of conjicere, to throw together, guess < com-, together + jacere, to throw: see jet

transitive verb conjectured -·tured, conjecturing -·tur·ing

intransitive verb