from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. Absence or incomplete development of an organ or body part.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Any imperfect development of the body, or any anomaly of organization.

from the GNU version of the Collaborative International Dictionary of English

  • n. Any imperfect development of the body, or any anomaly of organization.

from The Century Dictionary and Cyclopedia

  • n. In physiology, any anomaly of organization consisting in the absence or imperfect development of parts. Also called agenesia.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. imperfect development; nondevelopment of a part


from Wiktionary, Creative Commons Attribution/Share-Alike License

a- + -genesis


  • Later, it was also determined he had a rare and potentially life-threatening condition called agenesis corpus callosum, which occurs when a portion of the brain fails to develop properly.

    Ventura County Star Stories

  • Christensen discovered a rare birth defect, known as agenesis of the corpus callosum, during a brain scan in the 1980s.

    NPR Topics: News

  • Peek suffered from a rare birth defect, agenesis of the corpus callosum, which basically meant that he was missing the bundle of fibers that connected both hemispheres of his brain.

    Kim Peek, the Man Who Inspired Rain Man, Dies at 58 | /Film

  • Because of a genetic disorder called sacral agenesis, Siggins's legs were amputated when she was young.

    Reality’s Believe It or Not

  • It must extend itself to cover horrors—ostomies and scars and flipper-hands and harelips and agenesis of the eyeballs—and it rises to every miserable occasion of the sick body.

    The Worst Years of Your Life

  • Five postwar children of male Gulf War veterans had renal agenesis, a condition in which part of the kidney fails to grow and develop properly.


  • Developmental disorder e.g., arteriovenous malformation, agenesis

    The Neuropsychiatric Guide to Modern Everyday Psychiatry

  • The scholastic records of this college student with callosal agenesis were fair to good for courses that involved language and verbal facility, but contrastingly poor for subjects such as geometry and geography that involved spatial and related nonverbal faculties which we now commonly associate with the right hemisphere.

    Roger W. Sperry - Nobel Lecture

  • Saul R. & Sperry, R.W. Absence of commissurotomy symptoms with agenesis of the corpus callosum.

    Roger W. Sperry - Nobel Lecture

  • How To Install Toilet Seat which climate strategy you choose, there are agenesis bolts and outlets for each of them.



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  • JM is awed by the phenomenon of reverse agenesis and asks 'would you like to supersize that'?

    March 12, 2010