geologic time
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geologic time
noun
the succession of eras, periods, and epochs as considered in historical geology.
Origin:
1860–65
1860–65
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
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Based on the Random House Dictionary, © Random House, Inc. 2013.
Cite This Source
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Link To geologic time
American Heritage
Science Dictionary
geologic time  (jē'ə-lŏj'ĭk) Pronunciation Key
(click for larger image in new window) 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 © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
00:10
Geologic time
is always a great word to know.
So is ort. Does it mean:
| a scrap or morsel of food left at a meal. |
| the offspring of a zebra and a donkey. |
Example sentences
Geologic time is subdivided into age, era and period in decreasing lengths of time involved.
While to human observers that's ancient history, in geologic time it's a blink of an eye ago.
The fossils are arranged by geologic time period and the formations in which they are found.
The age of formations is marked on a geologic calendar known as the geologic time scale.
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