HYPOTHESIS
hypothesis, possibility, theory
(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”
guess, conjecture, supposition, surmise, surmisal, speculation, hypothesis
(noun) a message expressing an opinion based on incomplete evidence
hypothesis
(noun) a proposal intended to explain certain facts or observations
Source: WordNet® 3.1
Etymology
Noun
hypothesis (plural hypotheses)
(sciences) Used loosely, a tentative conjecture explaining an observation, phenomenon or scientific problem that can be tested by further observation, investigation and/or experimentation. As a scientific term of art, see the attached quotation. Compare to theory, and quotation given there.
(general) An assumption taken to be true for the purpose of argument or investigation.
(grammar) The antecedent of a conditional statement.
Synonyms
• supposition
• theory
• thesis
• educated guess
• guess
• See also supposition
Source: Wiktionary
Hy*poth"e*sis, n.; pl. Hypotheses. Etym: [NL., fr. Gr. 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.
An hypothesis being a mere supposition, there are no other limits to
hypotheses than those of the human imagination. J. S. Mill.
2. (Natural Science)
Definition: 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. Nebular hypothesis. See
under Nebular.
Source: Webster’s Unabridged Dictionary 1913 Edition