from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A physiological or structural abnormality that develops at or before birth and is present at the time of birth, especially as a result of faulty development, infection, heredity, or injury.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun medicine Any of several medical disorders that are present at birth.

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

  • noun a defect that is present at birth


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