- The definition of a telescope is an optical instrument that makes far away objects look closer by using a special arrangement of lenses and mirrors.
An optical instrument you use to look at the stars that makes the stars appear closer is an example of a telescope.
A small telescope.
Origin of telescopeItalian telescopio (coined by Galileo, 1611) ; from Modern Latin telescopium ; from Classical Greek tēleskopos, seeing from a distance: see tele- and amp; -scope
intransitive verbtelescoped, telescoping
- to cause to telescope
- to condense; shorten, as by combining parts, compressing, etc.
- An arrangement of lenses or mirrors or both that gathers light, permitting direct observation or photographic recording of distant objects.
- Any of various devices, such as a radio telescope, used to detect and observe distant objects by their emission, absorption, or reflection of electromagnetic radiation.
verbtel·e·scoped, tel·e·scop·ing, tel·e·scopes
- To cause to slide inward or outward in overlapping sections, as the cylindrical sections of a small hand telescope do.
- To make more compact or concise; condense.
Origin of telescopeNew Latin telescopium or Italian telescopio, both from Greek tēleskopos, far-seeing : tēle-, tele- + skopos, watcher; see spek- in Indo-European roots.
(third-person singular simple present telescopes, present participle telescoping, simple past and past participle telescoped)
Coined in 1611 by the Greek mathematician Giovanni Demisiani for one of Galileo Galilei's instruments presented at a banquet at the Accademia dei Lincei.