iso·​chron ˈī-sə-ˌkrän How to pronounce isochron (audio)
variants or isochrone
: an imaginary line or a line on a chart connecting points at which an event occurs simultaneously or which represents the same time or time difference

Word History


International Scientific Vocabulary is- + -chron (from Greek chronos time)

First Known Use

1881, in the meaning defined above

Time Traveler
The first known use of isochron was in 1881

Dictionary Entries Near isochron

Cite this Entry

“Isochron.” Dictionary, Merriam-Webster, Accessed 6 Jun. 2023.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!