[hahy-poth-uh-sahyz, hi-]
verb (used with object), hy·poth·e·sized, hy·poth·e·siz·ing.
  1. to assume by hypothesis.
Also hypothecate; especially British, hy·poth·e·sise.

Origin of hypothesize

First recorded in 1730–40; hypothes(is) + -ize
Related formshy·poth·e·siz·er, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for hypothesise

Historical Examples of hypothesise

  • To hypothesise alone is the error of the visionary and the dreamer.

    A Logic Of Facts

    George Jacob Holyoake

British Dictionary definitions for hypothesise



  1. to form or assume as a hypothesis
Derived Formshypothesizer 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

Word Origin and History for hypothesise

chiefly British English spelling of hypothesize; for suffix, see -ize. Related: Hypothesised; hypothesising.



1738, from hypothesis + -ize. Related: Hypothesized; hypothesizing.

Online Etymology Dictionary, © 2010 Douglas Harper

hypothesise in Science


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