chrono-: used before a vowel
- The interval of time represented by a specific stratum of rock selected to be representative of all rocks formed during the same span of time.
- The interval of time between two reversals of the Earth's magnetic polarity.
Origin of chronFrom Greek khronos time
Variant of chrono-
- (geology) A period of time between two geomagnetic reversals.
OriginSee also: chroń
Apparently from chrono-, perhaps for resonance with eon.