definition of
conjecture

[1] #1 conjecture n. [speculation] a hypothesis that has been formed by speculating or conjecturing (usually with little hard evidence); "speculations about the outcome of the election"; "he dismissed it as mere conjecture". wn

[2] #2 conjecture v. [speculate, theorize, theorise, hypothesize, hypothesise, hypothecate, suppose] to believe especially on uncertain or tentative grounds; "Scientists supposed that large dinosaurs lived in swamps". wn

[3] #3 conjecture n. [guess, supposition, surmise, surmisal, speculation, hypothesis] a message expressing an opinion based on incomplete evidence. wn

[4] #4 conjecture n. reasoning that involves the formation of conclusions from incomplete evidence. wn