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单词 geologic time
释义

geologic time


noun

the succession of eras, periods, and epochs as considered in historical geology.

Origin of geologic time

First recorded in 1860–65

Words nearby geologic time

geolocation, geologic, geological cycle, Geological Survey, geological timescale, geologic time, geologist, geologize, geology, geom., geomagnetic
Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Scientific definitions for geologic time

geologic time
[ jē′ə-lŏjĭk ]

The period of time covering the formation and development of the Earth, from about 4.6 billion years ago to today.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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