(mathematics) a rectangular array of quantities or expressions set out by rows and columns; treated as a single element and manipulated according to rules

an enclosure within which something originates or develops (from the Latin for womb)

the formative tissue at the base of a nail

the body substance in which tissue cells are embedded

a rectangular matrix of dots from which written characters can be formed

a square matrix whose determinant is not zero

a square matrix whose determinant is zero

the addition of matrices