Nearby Words
adjective
1.
noting or pertaining to an era occurring between 570 million and 230 million years ago, characterized by the advent of fish, insects, and reptiles.
noun
2.
the Paleozoic Era or group of systems.
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Paleozoic
has a plethora of syllables.
So is dichlorodiphenyltrichloroethane. Does it mean:
| the estimation of something as valueless (encountered mainly as an example of one of the longest words in the English language). |
| a white, crystalline, water-insoluble solid, C14H9Cl5, usually derived from chloral by reaction with chlorobenzene in the presence of fuming sulfuric acid: used as an insecticide and as a scabicide and pediculicide: agricultural use prohibited in the U.S. |
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Based on the Random House Dictionary, © Random House, Inc. 2012.
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Link To Paleozoic
Etymonline
Word Origin & History
Paleozoic
geological era between the Precambrian and the Mesozoic, 1838, coined by Adam Sedgwick (1785-1873) from paleo- + Gk. zoe "life."
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Science Dictionary
Paleozoic  (pā'lē-ə-zō'ĭk) Pronunciation Key
The era of geologic time from about 540 to 245 million years ago. The beginning of the Paleozoic Era is characterized by a great diversity of marine invertebrate animals. Primitive fish and reptiles, land plants, and insects also first appeared during this time. The end of the Paleozoic is marked by the largest recorded mass extinction in the Earth's history, which wiped out nearly 90% of known marine life forms. See Chart at geologic time. |
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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