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a polar katabatic wind
Of or relating to the downward flow of cold dense air: a katabatic wind.
(Environmental Science) (of winds) blowing downhill through having become denser with cooling, esp at night when heat is lost from the earth's surface. Compare anabatic
kat•a•bat•ic(ˌkæt əˈbæt ɪk)
(of a wind) moving downward or down a slope.
[1915–20; < Greek katabatikós pertaining to descent]
katabatic- Skiing is a katabatic sport—moving down a slope or valley.
See also related terms for slope.
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|Adj.||1.||katabatic - of an air current or wind; moving downward or down a slope because of cooling especially at night|
meteorology - the earth science dealing with phenomena of the atmosphere (especially weather)
anabatic - of an air current or wind; rising especially up a slope; "an anabatic wind"