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EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC PHENOMENA > FREEZE
Definition:
The condition that exists when, over a widespread area, the surface
temperature of the air remains below freezing 0 C (32 F) for a sufficient
amount of time to constitute the characteristic feature of the weather. A
freeze is a term used for the condition when vegetation is injured by
these low air temperatures, regardless if frost were deposited. 
Reference:
Glossary of Weather and Climate, American Meteorological Society, 1996.
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