from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The leading portion of a cold atmospheric air mass moving against and eventually replacing a warm air mass.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A cold front is the leading edge of an advancing mass of cold air.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. the front of an advancing mass of colder air
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