noun
- a line on a map connecting points of equal atmospheric pressure at a given time or on average over a period
Usage: meteorology; also called isobar in modern usage
Examples
- Meteorologists use isobares to identify high-pressure and low-pressure systems on weather maps.
- The isobares on the forecast chart showed a strong storm system moving eastward.
- Closely spaced isobares indicate steep pressure gradients and potentially strong winds.
- Weather patterns often follow the flow of isobares across a region.