Lewis Short
gĕōmētres | gĕōmētra (noun M) : (also , Aur. Vict. Ep. 14, 2;
* And gĕŏmetra, ae,Sid. Ep. 4, 11: geomētrēs, trisyl.,Juv. 3, 76), m., = γεωμέτρης, a geometer, geometrician: quomodo geometres cernere ea potest quae aut nulla sunt aut internosci a falsis non possunt?Cic. Ac. 2, 7, 22: geometres,Quint. 1, 10, 6; Juv. 3, 76.—Dat. geometrae, Quint. 1, 12, 6.—Acc. geometren, id. 1, 10, 4.— Plur.: geometrae,Cic. Off. 3, 7, 33; id. Fat. 8, 15; Quint. 12, 11, 20; Fragm. Jur. Rom. Vatic. 150 Huschke.—Dat. geometris, id. 1, 10, 18.—Acc. geometras, id. 5, 10, 7.
Charlton T. Lewis, Charles Short, A Latin Dictionary