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R_________
Definitions
A weather instrument carried by balloon to send upper-air measurements.
Word origin
From radio + sonde.
Used in a sentence
“Thus, the performance characteristics of radiosondes and the relative accuracy of radiosonde winds have been the subject of a great deal of scrutiny over the last few decades.”
“Sounding balloons carry a payload, usually a radiosonde, to heights of 30 km or more.”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer0 curated clues
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