-scope
an ending representing mod.L. -scopium (f. Gr. σκοπεῖν to look at, examine) in microscope and telescope. Hence used, by addition to Greek stems, to form many words denoting scientific instruments or contrivances for enabling the eye to view or examine or make observations: as autoscope, baroscope, chronoscope, dynamoscope, gyroscope, helioscope, laryngoscope, ophthalmoscope, periodoscope, etc. (Cf. F. -scope, It. -scopio, etc.) Also added to L. stems, as in fluoroscope, oscilloscope, and to Eng. words, as in radarscope, sniperscope.