- a crystal of ice sufficiently heavy to fall from the atmosphere.
Origin of snow crystal
First recorded in 1865–70
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for snow crystal
The microscope gave me the same broken hexagonal prisms, mixed with tables closely resembling the snow-crystal.Adrift in the Arctic Ice Pack
Elisha Kent Kane