n.; pl. Matrices [ L., fr. mater mother. See Mother, and cf. Matrice. ] [ 1913 Webster ] 1. (Anat.) The womb. [ 1913 Webster ] All that openeth the matrix is mine. Ex. xxxiv. 19. [ 1913 Webster ] 2. Hence: That which gives form or origin to anything; as: (a) (Mech.) The cavity in which anything is formed, and which gives it shape; a die; a mold, as for the face of a type. (b) (Min.) The earthy or stony substance in which metallic ores or crystallized minerals are found; the gangue. (c) pl. (Dyeing) The five simple colors, black, white, blue, red, and yellow, of which all the rest are composed. [ 1913 Webster ] 3. (Biol.) The lifeless portion of tissue, either animal or vegetable, situated between the cells; the intercellular substance. [ 1913 Webster ] 4. (Math.) A rectangular arrangement of symbols in rows and columns. The symbols may express quantities or operations. [ 1913 Webster ] | 
