-scopy
a formative element f. Gr. -σκοπία observation (f. σκοπεῖν to examine, look at: see -y3), used to form ns. denoting: (a) (formerly) divination by inspection of something (ooscopy, ornithoscopy); (b) scientific examination by means of some instrument (stethoscopy, telescopy); (c) medical examination of some part of the body (gastroscopy, peritoneoscopy).