ISOBAR
isobar
(noun) (meteorology)an isogram connecting points having equal barometric pressure at a given time
Source: WordNet® 3.1
Etymology
Noun
isobar (plural isobars)
(meteorology) A line drawn on a map or chart connecting places of equal or constant pressure.
(nuclear physics) Either of two nuclides of different elements having the same mass number.
(thermodynamics) A set of points or conditions at constant pressure.
Usage notes
• (meteorology)
Anagrams
• Borias, boiars
Source: Wiktionary
I"so*bar, n. Etym: [Iso- + Gr. (Phys. Geog.)
Definition: A line connecting or marking places upon the surface of the
earth where height of the barometer reduced to sea level is the same
either at a given time, or for a certain period (mean height), as for
a year; an isopiestic line. [Written also isobare.]
I"so*bar, n.
Definition: The quality or state of being equal in weight, especially in
atmospheric pressure. Also, the theory, method, or application of
isobaric science.
Source: Webster’s Unabridged Dictionary 1913 Edition