phantasm

phantasm definition - medical

phan·tasm (fănˈtăzˌəm)

noun
  1. Something apparently seen but having no physical reality; an apparition.
  2. An illusory mental image.

The American Heritage® Medical Dictionary Copyright © 2009 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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