noun

isobar

isobar

The isobars on the weather map are close together.

The isobars on the weather map are close together.

((an isobar)) a line on a weather map connecting points of equal atmospheric pressure The isobars on the weather map are close together.

Synonyms: contour line, isotherm

From Greek 'isos' (equal) + 'baros' (weight, pressure).

Remember 'iso-' means 'equal' and '-bar' relates to pressure (like a barometer). So, it's a line of equal pressure.

This page is designed for learning support. Please use it as a learning reference, not as a formal reference.