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[ahy-dee-ey-shuh n]
See more synonyms for ideation on Thesaurus.com
  1. the process of forming ideas or images.
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Origin of ideation

First recorded in 1820–30; ideate + -ion
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words for ideation

reflection, thinking, attention, understanding, logic, speculation, hope, idea, opinion, judgment, reasoning, meditation, seeing, intuition, deliberation, considering, cerebration, anticipation, realizing, introspection

Examples from the Web for ideation

Contemporary Examples of ideation

Historical Examples of ideation

  • If it be present, the ideation and explicit judgment may be dispensed with.

    The Value of Money

    Benjamin M. Anderson, Jr.

  • We have already seen that our ideation has the self for center and point of reference.

  • The will-power of an individual is dependent upon his ideation.

  • The suppression extends over the unconscious ideation, because the liberation of pain might emanate from the ideation.

    Dream Psychology

    Sigmund Freud

  • Up to this time his talent and capabilities had outstripped his powers of ideation.

Word Origin and History for ideation


1829; see idea + -ation. Related: Ideational.

As we say Sensation, we might say also, Ideation; it would be a very useful word; and there is no objection to it, except the pedantic habit of decrying a new term. [James Mill, "Analysis of the Phenomena of the Human Mind," London, 1829]
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Online Etymology Dictionary, © 2010 Douglas Harper

ideation in Medicine


  1. The formation of ideas or mental images.
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Related formside•ate′ v.i′de•ation•al adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.