before a vowel also cupr-, used as combining form of L. cuprum COPPER, in Chem. and Min., as Cuprammonium, Cupro-sulphate; Capromagnesite, a hydrous sulphate of copper and magnesium (Dana, 1875); Cuproplumbite, a native sulphide of copper and lead (Dana, 1850); Cuproscheelite, native tungstate of copper and calcium; Cupro-tungstite, native tungstate of copper (Dana, 1875); etc.
