isobar


iso·bar

noun \ˈī-sə-ˌbär\

Definition of ISOBAR

1
:  an imaginary line or a line on a map or chart connecting or marking places of equal barometric pressure
2
:  one of two or more atoms or elements having the same atomic weights or mass numbers but different atomic numbers

Illustration of ISOBAR

Origin of ISOBAR

International Scientific Vocabulary is- + -bar (from Greek baros weight); akin to Greek barys heavy — more at grieve
First Known Use: circa 1864

iso·bar

noun \ˈī-sə-ˌbär\   (Medical Dictionary)

Medical Definition of ISOBAR

: one of two or more atoms or elements having the same atomic weights or mass numbers but different atomic numbers

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