Definition of rawinsonde in US English:

rawinsonde

noun

Meteorology
  • A balloon-borne device comprising a radiosonde and a radar target which both transmits meteorological data to ground stations and permits rawin observations to be made; (also) the operation of obtaining measurements using such a device.

Origin

1940s. From rawin + sonde.

Pronunciation

rawinsonde

/ˈreɪwɪnˌsɒnd/