isobar

n. १ (as, one of two or more atoms having practically the same atomic weights but different atomic numbers and hence different chemical properties) समभारिक (पु.) २ Meteor. (an imaginary line or a line on a map or chart connecting or marking places on the surface of the earth where height of the barometer reduced to sea-level is the same) समभार रेषा (स्त्री.)