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Medical Dictionary


noun ma·trix \ˈmā-triks\
plural ma·tri·ces \ˈmā-trə-ˌsēz also ˈma-\ or matrixes

Medical Definition of MATRIX

a :  the extracellular substance in which tissue cells (as of connective tissue) are embedded <mineralization of bone matrix> b :  the thickened epithelium at the base of a fingernail or toenail from which new nail substance develops—called also nail bed, nail matrix
:  something (as a surrounding or pervading substance or element) within which something else originates or takes form or develops
:  a mass by which something is enclosed or in which something is embedded <membrane-bound organelles suspended in the cytoplasmic matrix> <chromatin fibers attach to the nuclear matrix>
a :  a strip or band placed so as to serve as a retaining outer wall of a tooth in filling a cavity b :  a metal or porcelain pattern in which an inlay is cast or fused
:  the substrate on or within which a fungus grows


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