isobar

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i·so·bar / ˈīsəˌbär/ • n. 1. Meteorol. a line on a map connecting points having the same atmospheric pressure at a given time or on average over a given period. ∎  Physics a curve or formula representing a physical system at constant pressure.2. Physics each of two or more isotopes of different elements, with the same atomic weight.DERIVATIVES: i·so·bar·ic / ˌīsəˈbarik; -ˈbär-/ adj.

isobars

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