isobar

1. n. 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. Source: opted

2. n. The quality or state of being equal in weight, especially in atmospheric pressure. Also, the theory, method, or application of isobaric science. Source: opted

3. n. (meteorology)an isogram connecting points having equal barometric pressure at a given time Source: wordnet

4. 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.] The quality or state of being equal in weight, especially in atmospheric pressure. Also, the theory, method, or application of isobaric science. Source: webster

5. A line connecting or marking places upon the surface of theearth where height of the barometer reduced to sea level is the sameeither at a given time, or for a certain period (mean height), as fora year; an isopiestic line. [Written also isobare.] Source: adambom

6. n. (meteorology)an isogram connecting points having equal barometric pressure at a given time Source: ecdict

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