Share this entry
isochron Syllabification: i·so·chron
Pronunciation: /ˈīsəˌkrän/

Definition of isochron in English:


chiefly Geology
A line on a diagram or map connecting points relating to the same time or equal times.
Example sentences
  • Age of movement has been deduced from Rb-Sr mineral isochrons.
  • An isochron defined by only two rutile points yields an age of 384 + / - 4 Ma.
  • Steve Austin describes the three methods of radioactive dating: 1) the model age, 2) the whole rock isochron, and 3) the mineral isochron.


Late 17th century (as an adjective in the sense 'isochronous'): from Greek isokhronos, from isos 'equal' + khronos 'time'.

Definition of isochron in:
Share this entry

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.

Subscribe to remove ads and access premium resources