Sū'per

A prefix, the Latin preposition super, and Greek ὑπέρ, signifying above, over, or in excess, and much used in composition.

☞ Super is often prefixed to the names of chemical compounds, signifying that the number of equivalents of the component to the name of which it is prefixed is greater than that of the other component or components; as, super-sulphate of potash;—used also, formerly, to denote that a salt to the name of which it is prefixed possesses acid properties.