"Quantic" is a word in ENGLISH

A homogeneous algebraic function of two or more variables,
in general containing only positive integral powers of the variables,
and called quadric, cubic, quartic, etc., according as it is of the
second, third, fourth, fifth, or a higher degree. These are further
called binary, ternary, quaternary, etc., according as they contain
two, three, four, or more variables; thus, the quantic / is a binary
cubic.