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hy·po·pig·men·ta·tion .hī-pō-.pig-mən-'tā-shən, -.men- n diminished pigmentation in a bodily part or tissue (as the skin)
hy·po·pig·ment·ed -'pig-mənt-əd, -.ment- adj
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hy·po·pig·men·ta·tion (hi″po-pig″mən-taґshən) [hypo- + pigmentation] abnormally diminished pigmentation. In the skin this is from decreased melanin production (amelanosis or hypomelanosis). See also depigmentation.Medical dictionary. 2011.