Main Entry: ¹tele·scope

Pronunciation: \ˈte-lə-ˌskōp\

Function: noun

Usage: often attributive

Etymology: New Latin telescopium, from Greek tēleskopos farseeing, from tēle- tele- + skopos watcher; akin to Greek skopein to look — more at spy

Date: 1648

1 : a usually tubular optical instrument for viewing distant objects by means of the refraction of light rays through a lens or the reflection of light rays by a concave mirror — compare reflector, refractor
2 : any of various tubular magnifying optical instruments
3 : radio telescope