[see meteorn.1; compare French hydrométéore] an atmospheric phenomenon which depends on the vapour of water, as rain, hail, and snow.
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1857 J. P. NicholCycl. Physical Sci.Hydrometeors. The whole aqueous phenomena of the Atmosphere... The chief specific Hydrometeors, viz. Clouds, Dew, Fogs, Snow, and Rain.