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island position
Islands, Bay of
islands of Langerhans
Islands of the Blessed
Islay
isle
Isle of Man
Isle of Wight
Isle Royale National Park
islet
islets of Langerhans
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isobar

i·so·bar [ ssə br ] (plural i·so·bars)


noun 
Definition:
 
1. line showing weather patterns: a line drawn on a weather map that connects places with equal atmospheric pressure. Isobars are often used collectively to indicate the movement or formation of weather systems.

2. atom with same mass number: one of two or more atoms or elements that have the same mass number but different atomic numbers

[Mid-19th century. < Greek isobaros "of equal weight"]

i·so·bar·ism noun
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