radio telescope

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A device used in radio astronomy for detecting and recording radio waves coming from stars and other celestial objects, usually consisting of a radio receiver with an antenna fixed on a wide bowl-shaped reflector that collects the waves.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

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

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun astronomical telescope that picks up electromagnetic radiations in the radio-frequency range from extraterrestrial sources