出典:Wiktionary
matrix group (複数形 matrix groups)
A group isomorphic to a matrix group is called a linear group and is said to be linear. In mathematical terms, for any linear group G, there exist a field K, an integer d and an injective homomorphism from G to (for some n) the general linear group GLn(K) that is a faithful linear representation of dimension d over K. G can be said to be linear of degree d over K.