telescope

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.

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.

To slide inward or outward in or as if in overlapping cylindrical sections.

To drive into one another like the movable joints or slides of a spy-glass: as, in the collision the forward cars were telescoped; to shut up or protrude like a jointed telescope.

To move in the same manner as the slides of a pocket-telescope; especially, to run or be driven together so that the one partially enters the other: as, two of the carriages telescoped.

An optical instrument by means of which distant objects are made to appear nearer and larger.

[capitalized] Same as Telescopium.

A telescope with its tube completely filled with water. Such an instrument was used by Airy at Greenwich, about 1870, as part of a zenith-sector, in order to settle by observation certain questions relating to the aberration of light.