[hahy-puh-pley-zhuh, -zhee-uh, -zee-uh]
Pathology. abnormal deficiency of cells or structural elements.
(in plants) inability to mature properly owing to a disease or inadequate supply of nutrients.
Also, hypoplasty [hahy-puh-plas-tee] .

1895–1900; hypo- + -plasia

hypoplastic, adjective
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World English Dictionary
hypoplasia or hypoplasty (ˌhaɪpəʊˈplæzɪə, ˈhaɪpəʊˌplæstɪ)
pathol incomplete development of an organ or part
hypoplasty or hypoplasty
hypoplastic or hypoplasty

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

hypoplasia hy·po·pla·sia (hī'pō-plā'zhə, -zhē-ə)

  1. Incomplete or arrested development of an organ or a part.

  2. Atrophy due to destruction of some of the elements of a tissue or an organ.

hy'po·plas'tic (-plās'tĭk) adj.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Example sentences for hypoplasia
Enamel hypoplasia is a condition in which the amount of enamel formed is inadequate.
Breast hypoplasia is a condition where one or both breasts fail to develop.
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