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wind direction indicator
avia., Canada	manche à vent
life.sc., tech.	indicateur de direction du vent
transp.	indicateur de direction de vent
English thesaurus
Wind Direction Indicator
meteorol., abbr.	WDI
wind direction indicator
avia., Canada	An indicator that is in the form of a truncated cone made of fabric and that is not less than 12 ft long and, at the larger end, not less than 3 ft in diameter, so constructed as to give a clear indication of the direction of surface wind and a general indication of wind speed; An actuated device for indicating visually to aircraft the direction of surface wind