Pronunciation: (rā'dē-ō-sond"), Strict Standards: Non-static method FenSites::linkTo() should not be called statically in /site/html/dictionary/radiosonde.html on line 71 [key]
an instrument that is carried aloft by a balloon to send back information on atmospheric temperature, pressure, and humidity by means of a small radio transmitter. Cf. rawinsonde
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.