geologic-time

geologic time

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

Origin:
1860–65

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Based on the Random House Dictionary, © Random House, Inc. 2013.
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American Heritage
Science Dictionary
geologic time   (jē'ə-lŏj'ĭk)  Pronunciation Key 


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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.
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00:10
Geologic-time is always a great word to know.
So is interrobang. Does it mean:
an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle.
a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question.
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