Main Entry: ma·trix

Pronunciation: \ˈmā-triks\

Function: noun

Inflected Form(s): plural ma·tri·ces \ˈmā-trə-ˌsēz also ˈma-\ or matrixes

1 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
2 : something (as a surrounding or pervading substance or element) within which something else originates or takes form or develops
3 : 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>
4 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
5 : the substrate on or within which a fungus grows