# isochrone

> English word · Noun

## Definitions
1. An isoline on a map or chart connecting points that have the same value for some time-related variable.
2. A semicubical parabola.

## Etymology
See iso- and chrono-.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/isochrone