from The Century Dictionary.

  • noun A line connecting points at which the same events occur simultaneously.
  • noun Specifically In hydrol., the line bounding an area of watershed whose river-flow will concentrate in a given time at a central point to form a flood.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun An isoline on a map or chart connecting points that have the same value of a quantity that has dimension time.
  • noun mathematics A semicubical parabola

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun an isogram connecting points at which something occurs or arrives at the same time


Sorry, no etymologies found.


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  • Isochrone Maps in Google Maps - Google Maps Mania links to resources on how to create an isochrone map - i.e., a map that shows travel time from a given point by drawing lines like topographic contours - within the Google Maps environment.

    Megite Technology News: What's Happening Right Now

  • Our proposal also includes observations of six well-studied globular and open star clusters; these observations will serve to calibrate our photometric indices, provide empirical population templates, and transform the theoretical isochrone libraries into the WFC3 filter system.

    SpaceRef Top Stories

  • What we can see is a pretty narrow Doldrums crossing point - visible because of the northwards bulge of the isochrone around the Predicted Route. USA Latest News

  • I've set the isochrone (the red line running west-to-east) to the afternoon of the 27th, towards the end of the transition zone into the westerly breeze. USA Latest News


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  • For example a line joining places that are all the same travel time from a certain point.

    May 15, 2018