isochrone

noun

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

• Hypernyms: ↑isogram, ↑isopleth, ↑isarithm

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\\ˈ ̷ ̷ ̷ ̷ at iso-+ˌkrōn\ noun (-s)

Etymology: International Scientific Vocabulary is- + -chrone (from Greek chronos time)

: a line on a map or chart connecting points at which an event occurs simultaneously or which represent the same time or time difference (as a line showing the distances that may be reached from a central point in a city in the same length of time)

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/uy"seuh krohn'/, n.

a line, as on a map, connecting all points having some property simultaneously, as in having the same delay in receiving a radio signal from a given source or requiring the same time to be reached by available transportation from a given center.

[1690-1700; back formation from ISOCHRONOUS or ISOCHRONAL]

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iˈsochrone noun

A line on a chart or map joining points associated with a constant time difference, eg in reception of radio signals

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Main Entry: ↑isochronal