n. Rain, snow and other precipitation products of the condensation of atmospheric water vapour
the GNU version of the Collaborative International Dictionary of English
n. A meteor or atmospheric phenomenon dependent upon the vapor of water; -- in the pl., a general term for the whole aqueous phenomena of the atmosphere, as rain, snow, hail, etc.
The Century Dictionary and Cyclopedia
n. A meteor or atmospheric phenomenon dependent upon the vapor of water; in the plural, all the aqueous phenomena of the atmosphere, as rain, hail, snow, etc.
Word Usage
"Hydrometeor-hydrometeor coagulation also involves coagulation of the individual aerosol components within each hydrometeor size bin."