from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun 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.
- noun meteorology A cold front is the
leading edgeof an advancingmass of cold air.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun the front of an advancing mass of colder air
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