Quăn′tic, n.

n. [Lat. quantitas, quantity, from quantus, how much. See QUANTITY.] (Math.) An homogeneous algebraic function, in general, called quadric, cubic, quartic, quintic, &c., according as it is of the second, third, fourth, fifth, &c., degrees. These are called binary, ternary, quaternary, &c., according as they contain two, three, four, &c., variables; thus, the quantic ax³ + bx²y + cxy² + dy³ is a binary cubic.