Wiktionary
contravariant
a. 1 (context category theory of a functor English) which reverses composition 2 (context computing programming English) Using or relating to contravariance. n. (cx algebra English) A bihomogeneous polynomial in dual variables of ''x'', ''y'', ... and the coefficients of some homogeneous form in ''x'', ''y'', ... that is invariant under some group of linear transformations.