[ hahy-poth-uh-sahyz, hi- ]
/ haɪˈpɒθ əˌsaɪz, hɪ- /

verb (used without object), hy·poth·e·sized, hy·poth·e·siz·ing.

to form a hypothesis.

verb (used with object), hy·poth·e·sized, hy·poth·e·siz·ing.

to assume by hypothesis.


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Also hypothecate; especially British, hy·poth·e·sise.

Origin of hypothesize

First recorded in 1730–40; hypothes(is) + -ize

OTHER WORDS FROM hypothesize

hy·poth·e·siz·er, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for hypothesised

  • I hypothesised this deduction from the fact that they were quite utterly gone.

    Fibble, D. D.|Irvin Shrewsbury Cobb

British Dictionary definitions for hypothesised



/ (haɪˈpɒθɪˌsaɪz) /


to form or assume as a hypothesis

Derived forms of hypothesize

hypothesizer or hypothesiser, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for hypothesised

[ hī-pŏthĭ-sīz′ ]

To form a hypothesis.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.