radioisotope thermoelectric generator
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radioisotope thermoelectric generator(ther-moh-i-lek -trik) (RTG) See thermoelectric generator.
Collins Dictionary of Astronomy © Market House Books Ltd, 2006
radioisotope thermoelectric generator[¦rād·ē·ō′ī·sə‚tōp ¦thər·mō·i′lek·trik ′jen·ə‚rād·ər]
A device for converting nuclear energy to electrical energy in which the heat produced by radioactivity of a radioisotope is used to produce a voltage in a thermocouple circuit; chief use has been in space vehicles and in instruments left on the lunar surface. Abbreviated RTG.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.