Isochrone may refer to:
*
Stellar isochrone, the curve on the Hertzsprung–Russell diagram representing stars of the same age
*
Isochrone curve
A tautochrone or isochrone curve (from Greek prefixes tauto- meaning ''same'' or iso- ''equal'', and chrono ''time'') is the curve for which the time taken by an object sliding without friction in uniform gravity to its lowest point is indepen ...
, the curve (a cycloid) for which objects starting at different points finish at the same time and point when released
*
Isochrone map
An isochrone map in geography and urban planning is a map that depicts the area accessible from a point within a certain time threshold. An isochrone (iso = equal, chrone = time) is defined as "a line drawn on a map connecting points at which som ...
, shows areas related to isochrones between different points
{{Disambiguation