isobar (redirected from isallobar)

isobar /iso·bar/ (i´so-bahr) one of two or more chemical species with the same atomic weight but different atomic numbers.

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i·so·bar (s-bär)

n.

1. Any of two or more kinds of atoms having the same atomic mass but different atomic numbers.

2. A line on a weather map connecting points of equal atmospheric pressure.

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isobar

[ī′səbär]

Etymology: Gk, isos + barrios, weight

1 a line connecting points of equal pressure on a graph, such as lines connecting points of equal carbon dioxide tension on a pH-bicarbonate diagram.

2 (in nuclear medicine) one of a group of nuclides having the same total number of neutrons and protons in the nucleus but so proportioned that their atomic numbers have different values.

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isobar (ī´sōbär),

n in radiochemistry, one of two or more different nuclides having the same mass number.

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isobar

1. one of two or more chemical species with the same atomic weight but different atomic numbers.

2. a line on a map or chart depicting the boundaries of an area of constant atmospheric pressure.