IDEATE
imagine, conceive of, ideate, envisage
(verb) form a mental image of something that is not present or that is not the case; “Can you conceive of him as the president?”
Source: WordNet® 3.1
Etymology 1
Verb
ideate (third-person singular simple present ideates, present participle ideating, simple past and past participle ideated)
To apprehend in thought so as to fix and hold in the mind; to memorize.
To generate an idea.
Adjective
ideate (not comparable)
Produced by an idea.
Etymology 2
Noun
ideate (plural ideates)
(metaphysics) The actual existence supposed to correspond with an idea; the correlate in real existence to the idea as a thought or existence.
Source: Wiktionary
I*de"at, I*de"ate, n. Etym: [LL. ideatum. See Idea.] (Metaph.)
Definition: The actual existence supposed to correspond with an idea; the
correlate in real existence to the idea as a thought or existence.
I*de"ate, v. t.
1. To form in idea; to fancy. [R.]
The ideated man . . . as he stood in the intellect of God. Sir T.
Browne.
2. To apprehend in thought so as to fix and hold in the mind; to
memorize. [R.]
Source: Webster’s Unabridged Dictionary 1913 Edition