dry ice

Chemistry, Trademark.

1. the solid form of carbon dioxide, which sublimes at −109.26°F (−78.48°C) and is used chiefly as a refrigerant.

noun

1. solid carbon dioxide, which sublimes at –78.5°C: used as a refrigerant, and to create billows of smoke in stage showsAlso called: carbon dioxide snow

1. Solid carbon dioxide. Dry ice evaporates without first passing through a liquid state by sublimation except under moderate pressure (more than 73 atmospheres). It is used for refrigeration and for creating artificial smoke or fog effects.