Prefixed to the name of a salt it is equivalent to basic; as, subacetate or basic acetate
A fixed amount of money that you pay regularly in order to be a member of a club or society is called your subs. Subs will be raised as from next year. = subscription fees
Sub- in Latin compounds often becomes sum- before m, sur before r, and regularly becomes suc-, suf- , sug-, and sup- before c, f, g, and p respectively