D defs.my
Entry 2 senses Webster, 1913

Super-

· Su·per- · IPA /ˌsupəɹ/
01 A prefix signifying above, over, beyond, and hence often denoting in a superior position, in excess, over and above, in addition, exceeding…
  1. 1.
    A prefix signifying above, over, beyond, and hence often denoting in a superior position, in excess, over and above, in addition, exceedingly; as in superimpose, supersede, supernatural, superabundance.
  2. 2.
    A prefix formerly much used to denote that the ingredient to the name of which it was prefixed was present in a large, or unusually large, proportion as compared with the other ingredients; as in calcium superphosphate. It has been superseded by per-, bi-, di-, acid, etc. (as peroxide, bicarbonate, disulphide, and acid sulphate), which retain the old meanings of super-, but with sharper definition. Cf. Acid, a., Bi-, Di-, and Per-.(Chem.) See: Acid, Bi-, Di-, Per-