matrix
/maytriks/ • noun (pl. matrices /maytriseez/ or matrixes) 1 an environment or material in which something develops. 2 a mould in which something is cast or shaped. 3 Mathematics a rectangular array of quantities in rows and columns that is manipulated according to particular rules. 4 a grid-like array of elements; a lattice. 5 a mass of fine-grained rock in which gems, crystals, or fossils are embedded. — ORIGIN Latin, ‘womb’, from mater ‘mother’.
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