[ ahy-dee-ey-shuh n ]
/ ˌaɪ diˈeɪ ʃən /


the process of forming ideas or images.

Origin of ideation

First recorded in 1820–30; ideate + -ion Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for 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]
Online Etymology Dictionary, © 2010 Douglas Harper

Medicine definitions for ideation


[ ī′dē-āshən ]


The formation of ideas or mental images.
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.