mental imagery men·ta·li·magery uncommon noun 1. the ability to form mental images of things or events “he could still hear her in his imagination” Synonymsimaginationimagingimagerymental imagery Related words Word family imageimagine Broader terms representational process Narrower terms mind's eyevisionpicturingdreamchimeraevocationpretense WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.