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Pronunciation:  hI'p√Ęthisis

WordNet Dictionary
  1. [n]  a tentative theory about 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"
  2. [n]  a message expressing an opinion based on incomplete evidence
  3. [n]  a proposal intended to explain certain facts or observations

HYPOTHESIS is a 10 letter word that starts with H.


 Synonyms: conjecture, guess, possibility, speculation, supposition, surmisal, surmise, theory
 See Also: assumption, concept, conception, conjecture, construct, framework, model, opinion, proposal, speculation, supposal, supposition, theoretical account, view



Webster's 1913 Dictionary
\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.

         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) 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}.

Medical Dictionary
 Definition: A tentative proposal made to explain certain observations or facts that requires further investigation to be verified.
Biology Dictionary
 Definition: In science, an idea or proposition that is based on certain observations about the natural world. Hypotheses are subject to scientific evaluation. Compare with law and theory.
 Definition: a statement that stipulates a relationship between a phenomenon for which the researcher seeks to account and one or more other phenomena.
Thesaurus Terms
 Related Terms: a priori principle, affirmation, apriorism, assertion, assumed position, assumption, axiom, basis, categorical proposition, conjecture, data, first principles, foundation, ground, guesswork, hypothesis ad hoc, inference, lemma, major premise, minor premise, philosopheme, philosophical proposition, position, postulate, postulation, postulatum, premise, premiss, presumption, presupposal, presupposition, proposition, propositional function, set of postulates, speculation, statement, sumption, supposal, supposing, supposition, surmise, theorem, theory, thesis, truth table, truth-function, truth-value, working hypothesis