any of various devices, esp. a radiosonde, for measuring and usually telemetering meteorological and other physical conditions at high altitudes
Origin of sondeFr, a sounding line from sonder: see sound
Any of various instruments, such as a radiosonde, used for measuring or testing physical conditions.
Origin of sondeFrench sonde sounding line, probe Old French sounding line from Old English sund(rāp) sounding (line) from sund sea
- Any of various devices for testing physical conditions, often for remote or underwater locations.