A monocular optical instrument that magnifies distant objects, especially in astronomy. / Any instrument used in astronomy for observing distant objects (such as a radio telescope).

(transitive, intransitive) To extend or contract in the manner of a telescope.

(astronomy) A device for observing astronomical sources of radio waves, normally having one or more large parabolic dishes.

Pertaining to, or carried out by means of, a telescope. / (chiefly astronomy) Seen by means of a telescope; only visible through a telescope. / Capable of seeing distant objects; far-seeing.

The manufacture and use of telescopes.

A seminar conducted over a telephone, set up as a conference call.

(astronomy) A small faint constellation of the southern winter sky, said to resemble a telescope. It lies south of the constellation of Corona Australis.

(astronomy) A telescope, having a wide field of view, comprising a thin aspheric lens and a large concave mirror

(astronomy) An instrument that detects X-rays originating from outside the Earth's atmosphere.

plural of telescope