Dry Ice

Dry Ice

noun Chemistry, Trademark.
the solid form of carbon dioxide, which sublimes at −109.26°F (−78.48°C) and is used chiefly as a refrigerant.
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World English Dictionary
dry ice
 
n
Also called: carbon dioxide snow solid carbon dioxide, which sublimes at --78.5°C: used as a refrigerant, and to create billows of smoke in stage shows

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Science Dictionary
dry ice  
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.
The American Heritage® Science Dictionary
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