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aplasia

[uh-pley-zhuh]
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noun Pathology.
  1. defective development or congenital absence of a limb, organ, or other body part.
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Origin of aplasia

First recorded in 1880–85; a-6 + -plasia
Related formsa·plas·tic [ey-plas-tik] /eɪˈplæs tɪk/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for aplasia

aplasia

noun
  1. pathol congenital absence or abnormal development of an organ or part
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Word Origin

C19: New Latin, from a- 1 + -plasia, from Greek plassein to form
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for aplasia

n.

1885, medical Latin, from Greek a-, privative prefix (see a- (3)), + -plasia.

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Online Etymology Dictionary, © 2010 Douglas Harper

aplasia in Medicine

aplasia

(ə-plāzhə)
n.
  1. Congenital absence of an organ or tissue.
  2. Incomplete, retarded, or defective development of an organ or tissue.
  3. Cessation of the usual regenerative process in an organ or tissue.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.