adj, noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   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.

Adjective

1. 1
   Which reverses the order of morphism composition: formally, which associates each morphism f:X→Y to a morphism F(f):F(Y)→F(X). not-comparable
2. 2
   Using or relating to contravariance. not-comparable
3. 3
   Scaling inversely with a change of basis. not-comparable

Antonyms

All antonyms

covariant

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.