geologic time

noun

Definition of geologic time

: the long period of time occupied by the earth's geologic history

Recent Examples of geologic time from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'geologic time.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of geologic time

1861


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