\Ge*om"e*ter\, n. [F. g['e]om[`e]tre, L. geometres, geometra, fr. Gr. gewme`trhs, fr. ge`a, gh^, the earth + me`tron measure. See {Meter} measure.] 1. One skilled in geometry; a geometrician; a mathematician. --I. Watts. 2. (Zo["o]l.) Any species of geometrid moth; a geometrid.