noun Rocketry.

a rocket, balloon, or rockoon used as a probe for observing phenomena in the atmosphere.

Origin of sonde

1920–25; < French: plumb line; see sound3 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for sonde

Historical Examples of sonde

British Dictionary definitions for sonde



a rocket, balloon, or probe used for observing in the upper atmosphere

Word Origin for sonde

C20: from French: plummet, plumb line; see sound ³
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