jēˈäməd.ə(r), -ətə- also ÷ ˈjäm- noun
Etymology: Middle English, from Middle French or Latin; Middle French geometre, from Latin geometres, geometra, from Greek geōmetrēs, from geōmetrein to measure or survey land — more at geometry
1. : a specialist in geometry
2. : a moth or moth larva of the family Geometridae : looper