imaginal[i maj′i nəl]
imaginal definition by Webster's New World
of or having to do with the imagination or mental images
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
Zool. of, or pertaining to, an imago (sense )
imaginal definition by American Heritage Dictionary
Of, relating to, or having the form of an insect imago.