Webster’s Revised Unabridged Dictionary · 1913
Geometer
Ge·om′e·ter (jē·ŏm′ē·tẽr), n. [F. géomètre, L. geometres, geometra, fr. Gr. γεωμέτρης, fr. γέα, γῆ, the earth + μέτρον measure. See Meter measure.] 1. One skilled in geometry; a geometrician; a mathematician. I. Watts.
2. (Zoöl.) Any species of geometrid moth; a geometrid.