单词 | geologic time |
释义 | geologic timenounthe succession of eras, periods, and epochs as considered in historical geology. Origin of geologic timeFirst recorded in 1860–65 Words nearby geologic timegeolocation, 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 timegeologic 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. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. |
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