Definition

1. Noun:
   • A line on a map or diagram connecting points at which an event occurs or a condition is achieved simultaneously: An isochrone specifically represents equal time intervals, typically showing locations reachable within the same travel time from a central point or where a phenomenon happens at the same moment.

Usage Examples

• Noun:
  • The urban planner used an isochrone map to show all areas within a 30-minute commute of the city center.
  • On the earthquake chart, the isochrones indicated the wave's simultaneous arrival at different seismic stations.

Advanced Usage

• "Travel-time isochrone": A common type of isochrone used in transportation and logistics to visualize accessibility.

  • The delivery company created travel-time isochrones to optimize their service zones.

• "Isochrone analysis": The use of isochrones in geographical studies or network planning.

  • Isochrone analysis revealed significant public transport deserts in the suburban region.

Variants and Related Words

• Isochronal (adj): Occurring at the same time or recurring at regular time intervals.

  • The isochronal vibrations of the pendulum were measured.

• Isochronous (adj): Equal in duration or occurring at the same time.

  • The data packets were sent in isochronous intervals.

Synonyms

• Time contour: A line connecting points of equal time value.
• Isochron: An alternative, less common term for isochrone.

Related Phrases

• To plot an isochrone: The action of drawing or calculating an isochrone line.
  • The researcher plotted an isochrone for the spread of the radio signal.

Related Idioms

(This term is highly technical and is not commonly used in idiomatic expressions.)

Noun

1. an isogram connecting points at which something occurs or arrives at the same time