comatrix
EnglishEdit
EtymologyEdit
NounEdit
comatrix (plural comatrices)
 (mathematics) Adjoint; The transposed matrix of the cofactors of the entries of a matrix.

2011, David E. Radford, Hopf Algebras, page 182:
 Better yet, we may take the coalgebra of the preceding corollary to be a comatrix coalgebra.
