Time measured with reference to geological events; the time which has elapsed since the formation of the earth and the beginning of the historical period.
Origin
Early 19th century; earliest use found in Quarterly Journal.
Definition of geological time in US English:
geological time
noun
Time measured with reference to geological events; the time which has elapsed since the formation of the earth and the beginning of the historical period.
Origin
Early 19th century; earliest use found in Quarterly Journal.