'Hypothesis' definitions:

Definition of 'hypothesis'

(from WordNet)
noun
A proposal intended to explain certain facts or observations
noun
A tentative insight into the natural world; a concept that is not yet verified but that if true would explain certain facts or phenomena; "a scientific hypothesis that survives experimental testing becomes a scientific theory"; "he proposed a fresh theory of alkalis that later was accepted in chemical practices" [syn: hypothesis, possibility, theory]
noun
A message expressing an opinion based on incomplete evidence [syn: guess, conjecture, supposition, surmise, surmisal, speculation, hypothesis]

Definition of 'Hypothesis'

From: GCIDE
  • Hypothesis \Hy*poth"e*sis\, n.; pl. Hypotheses. [NL., fr. Gr. ? foundation, supposition, fr. ? to place under, ? under + ? to put. See Hypo-, Thesis.]
  • 1. A supposition; a proposition or principle which is supposed or taken for granted, in order to draw a conclusion or inference for proof of the point in question; something not proved, but assumed for the purpose of argument, or to account for a fact or an occurrence; as, the hypothesis that head winds detain an overdue steamer. [1913 Webster]
  • An hypothesis being a mere supposition, there are no other limits to hypotheses than those of the human imagination. --J. S. Mill. [1913 Webster]
  • 2. (Natural Science) A tentative theory or supposition provisionally adopted to explain certain facts, and to guide in the investigation of others; hence, frequently called a working hypothesis.
  • Syn: Supposition; assumption. See Theory. [1913 Webster]
  • Nebular hypothesis. See under Nebular. Hypothetic

Synonyms of 'hypothesis'

From: Moby Thesaurus