fetus

fetus definition - medical

fe·tus (fēˈtəs)

noun pl. fe·tus·es
  1. The unborn young of a viviparous vertebrate having a basic structural resemblance to the adult animal.
  2. In humans, the unborn young from the end of the eighth week after conception to the moment of birth.

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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