DORAN

[ dawr-an, dohr- ]
/ ˈdɔr æn, ˈdoʊr- /
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noun

an electronic device for determining range and assisting navigation, employing the principle of the Doppler effect.

Origin of DORAN

Do(ppler) ran(ge)
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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