Douglas Harper's Etymology Dictionary
chiefly British English spelling of hypothesize; for suffix, see -ize. Related: Hypothesised; hypothesising.
Wiktionary
vb. (context intransitive English) To believe or assert on uncertain grounds.
WordNet
v. to believe especially on uncertain or tentative grounds; "Scientists supposed that large dinosaurs lived in swamps" [syn: speculate, theorize, theorise, conjecture, hypothesize, hypothecate, suppose]
Usage examples of "hypothesise".
It hypothesises very boldly, but on the other hand it will not gravely make believe.
People have hypothesised that the Gallacellans have so many eyes and use them thus because on their home-world they were prey to a large number of natural enemies.
Like I hypothesised, the old don't use self-consistent logic structures any more.
Anur, a gangly, awkward-looking young male who was the Soulhaven’s most junior monk, escorted them, explaining something of airspheres’ legendary history and hypothesised ecology.