·noun Quantity; amount.
II. Quantum ·noun A definite portion of a manifoldness, limited by a mark or by a boundary.
quantum, adv., v. quantus fin. ...
A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.
quantum adv. quantus, as much as, so much as, to as great an extent : erus, quantum aud...
An Elementary Latin Dictionary