(anatomy, cytology) All the connective tissues and fibres that are not part of a cell, but rather provide support.

(linear algebra) Any n×n square matrix for which there exists a corresponding inverse matrix (i.e., a second (or possibly the same) matrix such that when the two are multiplied by each other, in either order, the result is the n×n identity matrix).

(computing, also attributively) A two-dimensional array or pattern of dots used (for example, by a display device or a printer) to represent alphanumeric characters and pictures.

(physics) The original formulation of quantum mechanics in which the operators were represented by time-dependent matrices.

(mathematics) A process by which a matrix (a rectangular table of numbers or abstract quantities that can be added and multiplied) is broken down into simpler numerical building blocks.

That functions by use of a dot matrix

The layer which surrounds chondrocytes in cartilage. It is basophilic, and stains metachromatically due to proteoglycans.

(mathematics) A square matrix that is its own transpose, and is thereby symmetric about the main diagonal

(anatomy) A highly cellular and highly vascularized region in the brain from which cells migrate out during brain development.

(mathematics) Any one of three complex matrices that arise in Wolfgang Pauli's treatment of spin in quantum mechanics.