Covariant :: Covariant (n.) A function involving the coefficients and the variables of a quantic, and such that when the quantic is lineally transformed the same function of the new variables and coefficients shall be equal to the old function multiplied by a factor. An invariant is a like function involving only the coefficients of the quantic..
Mesovarium :: Mesovarium (n.) The fold of peritoneum connecting the ovary with the wall of the abdominal cavity.