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isobar
Definitions
[ˈʌɪsə(ʊ)bɑː], (Noun)
Definitions:
- a line on a map connecting points having the same atmospheric pressure at a given time or on average over a given period
- each of two or more isotopes of different elements, with the same atomic weight
Phrases:
Origin
:
mid 19th century: from Greek isobaros ‘of equal weight’, from isos ‘equal’ + baros ‘weight’
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definition by Oxford Dictionaries