coetaneous

[koh-i-tey-nee-uhs] Origin

co·e·ta·ne·ous

[koh-i-tey-nee-uhs]
adjective
of the same age or duration.

Origin:
1600–10; < Latin coaetāneus, equivalent to co- co- + aet(ās) age + -āneus compound adj. suffix; see -an, -eous

co·e·ta·ne·ous·ly, adverb
co·e·ta·ne·i·ty [koh-i-tuh-nee-i-tee] , co·e·ta·ne·ous·ness, noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
Cite This Source Link To coetaneous

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Coetaneous has a plethora of syllables.
So is dichlorodiphenyltrichloroethane. Does it mean:
given to using long words.
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.
Collins
World English Dictionary
coetaneous (ˌkəʊɪˈteɪnɪəs)
 
adj
rare of the same age or period
 
[C17: from Latin coaetāneus, from co- same + aetās age]
 
coe'taneously
 
adv
 
coe'taneousness
 
n

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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Etymonline
Word Origin & History

coetaneous
1608, from L.L. coætanus "one of the same age," from co- "with, together with" + ætat- "age" + adj. suffix -aneus.
Online Etymology Dictionary, © 2010 Douglas Harper
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