462 results for: hypothesis

What Is A Hypothesis
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Dictionary Entries (10 more entries. View all »)

hy·poth·e·sis

Audio Help [hahy-poth-uh-sis, hi-] Pronunciation Key

–noun, plural -ses

1.	a proposition, or set of propositions, set forth as an explanation for the occurrence of some specified group of phenomena, either asserted merely as a provisional conjecture to guide investigation (working hypothesis) or accepted as highly probable in the light of established facts.

2.	a proposition assumed as a premise in an argument.

3.	the antecedent of a conditional proposition.

4.	a mere assumption or guess.

[Origin: 1590–1600; < Gk hypóthesis basis, supposition. See hypo-, thesis

]

—Related forms

hy·poth·e·sist, noun

—Synonyms 1. See theory.

Dictionary.com Unabridged (v 1.1)
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2006.

Thesaurus Entries

	Synonym Collection v1.1	Cite This Source
Main Entry:	hypothesis
Part of Speech:	adjective
Synonyms:	conjectural, hypothetical, notional, suppositious, theoretical
Source:	Synonym Collection v1.1 Copyright © 2008 by Lexico Publishing Group, LLC.

	Synonym Collection v1.1	Cite This Source
Main Entry:	hypothesis
Part of Speech:	noun
Synonyms:	assumption, belief, deduction, guess, premise, proposal, supposition, system, theory, thesis
Source:	Synonym Collection v1.1 Copyright © 2008 by Lexico Publishing Group, LLC.

	Roget's II: The New Thesaurus	Cite This Source
Main Entry:	theory
Part of Speech:	noun
Definition:	A belief used as the basis for action.
Source:	Roget's II: The New Thesaurus, Third Edition by the Editors of the American Heritage® Dictionary. Copyright © 2003, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Encyclopedia Articles (447 more entries. View all »)

nebular hypothesis: see solar system.

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