the succession of eras, periods, and epochs as considered in historical geology.
Words nearby geologic time
Origin of geologic time
First recorded in 1860–65
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020
Scientific definitions for geologic time
[ jē′ə-lŏj′ĭk ]
The period of time covering the formation and development of the Earth, from about 4.6 billion years ago to today.
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