ideate

Short definition from Wiktionary

Verb

1. 1
   To apprehend in thought so as to fix and hold in the mind; to memorize.
2. 2
   To generate an idea.

Adjective

1. 1
   Produced by an idea.

Noun

1. 1
   The actual existence supposed to correspond with an idea; the correlate in real existence to the idea as a thought or existence.