Devonian
ni adjective
1.
Geology. noting or pertaining to a period of the Paleozoic Era, 405 to 345 million years ago, characterized by the dominance of fishes and the advent of amphibians and ammonites. See table under geologic time.
2.
of or pertaining to Devonshire, England.
noun
3.
Geology. the Devonian Period or System.
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.
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Link To Devonian
Collins
World English Dictionary
Devonian (dəˈvəʊnɪən) ![[Click for IPA pronunciation guide]](http://static.sfdict.com/dictstatic/g/d/dictionary_questionbutton_default.gif) | |
| —adj | |
| 1. | of, denoting, or formed in the fourth period of the Palaeozoic era, between the Silurian and Carboniferous periods, lasting 60-70 million years during which amphibians first appeared |
| 2. | of or relating to Devon |
| —n | |
| 3. | the Devonian the Devonian period or rock system |
Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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00:10
Devonian
is always a great word to know.
So is soil. Does it mean:
| portion of the earth's surface consisting of disintegrated rock and humus |
| central portion of the earth believed to be composed mainly of iron and nickel in a molten state |
Etymonline
Word Origin & History
Devonian
1837, as a geological era, from the English county of Devon, where the Old Red Sandstone formations of that age are prominent.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Science Dictionary
Devonian  (dĭ-vō'nē-ən) Pronunciation Key
The fourth period of the Paleozoic Era, from about 408 to 360 million years ago. During this time there were three major landmasses: most of modern day North America and Europe were located along the equator; a portion of Siberia was located to the north; and a continent consisting of South America, Australia, Africa, India, and Antarctica was located in the Southern Hemisphere. In the early Devonian small plants dominated the landscape, but by the end of the Devonian ferns and seed plants had appeared, as had the first forests. The first tetrapods (terrestrial vertebrates) and terrestrial arthropods appeared, as did many new types of fish. See Chart at geologic time. |
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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