[ naf-theen, nap- ]
/ ˈnæf θin, ˈnæp- /
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any of a group of hydrocarbon ring compounds of the general formula, CnH2n, derivatives of cyclopentane and cyclohexane, found in certain petroleums.
QUIZ YOURSELF ON PARENTHESES AND BRACKETS APLENTY!
Set some time apart to test your bracket symbol knowledge, and see if you can keep your parentheses, squares, curlies, and angles all straight!
Question 1 of 7
Let’s start with some etymology: What are the origins of the typographical word “bracket”?
First appeared around 1750, and is related to the French word “braguette” for the name of codpiece armor.
First appeared in 1610, based on the French word “baguette” for the long loaf of bread.
First appeared in 1555, and is related to the French word “raquette” for a netted bat.TAKE THE QUIZ TO FIND OUT
OTHER WORDS FROM naphthenenaph·the·nic [naf-thee-nik, -then-ik, nap-], /næfˈθi nɪk, -ˈθɛn ɪk, næp-/, adjective
Words nearby naphthene
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021
British Dictionary definitions for naphthene
/ (ˈnæfθiːn, ˈnæp-) /
any of a class of cycloalkanes, mainly derivatives of cyclopentane, found in petroleum
Word Origin for naphthene
C20: from naphtha + -ene
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Scientific definitions for naphthene
[ năf′thēn′, năp′- ]
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.