[ rey-dee-oh-sond ]
/ ˈreɪ di oʊˌsɒnd /

noun Meteorology.

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.
Compare rawinsonde

Origin of radiosonde

First recorded in 1935–40; radio- + sonde Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for radiosonde


/ (ˈreɪdɪəʊˌsɒnd) /


an airborne instrument used to send meteorological information back to earth by radioAlso called: radiometeorograph

Word Origin for radiosonde

C20: radio- + French sonde sounding line
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Science definitions for radiosonde


[ rādē-ō-sŏnd′ ]

An instrument that is carried into the atmosphere by a balloon, makes measurements of temperature, air pressure, humidity, and wind speed and direction, and transmits the measurements back to the ground. A radiosonde is typically sent to altitudes of approximately 30 km (18.6 mi). There are approximately 70 radiosonde stations across the continental United States. Each station launches two radiosondes daily.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.