[verb pos-chuh-leyt; noun pos-chuh-lit, -leyt]

verb (used with object), pos·tu·lat·ed, pos·tu·lat·ing.


Nearby words

  1. posttraumatic stress disorder,
  2. posttraumatic syndrome,
  3. posttyphoid,
  4. postulancy,
  5. postulant,
  6. postulator,
  7. postural,
  8. postural contraction,
  9. postural drainage,
  10. postural position

Origin of postulate

1525–35; < Latin postulātum petition, thing requested, noun use of neuter of past participle of postulāre to request, demand, akin to pōscere to request

Related forms Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for postulate

British Dictionary definitions for postulate


verb (ˈpɒstjʊˌleɪt) (tr; may take a clause as object)

to assume to be true or existent; take for granted
to ask, demand, or claim
to nominate (a person) to a post or office subject to approval by a higher authority

noun (ˈpɒstjʊlɪt)

something taken as self-evident or assumed as the basis of an argument
a necessary condition or prerequisite
a fundamental principle
logic maths an unproved and indemonstrable statement that should be taken for granted: used as an initial premise or underlying hypothesis in a process of reasoning
Derived Formspostulation, noun

Word Origin for postulate

C16: from Latin postulāre to ask for, require; related to pōscere to request

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 postulate
Online Etymology Dictionary, © 2010 Douglas Harper

Medicine definitions for postulate




To assume or assert the truth or necessity of, especially as a basis of an argument.


An unproved assertion or assumption, especially a statement offered as the basis of a theory.
Related formspos′tu•lation n.

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Science definitions for postulate



See axiom.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Culture definitions for postulate


A statement accepted as true for the purposes of argument or scientific investigation; also, a basic principle. (See axiom.)

The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.