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hyperbar
hyperbar n.
Brit. 
/ˈhʌɪpəbɑː/
, /ˈhʌɪpəbɑː/U.S. /ˈhaɪpərˌbɑr/
Meteorology a ridge of high barometric pressure./ˈhaɪpərˌbɑr/ΚΠ
1926 A. G. McAdie Man & Weather 98 A ridge of high pressure connected the Atlantic hyperbar with a north polar anticyclone more or less permanent.
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