nitro-

nitro-

a combining form used in the names of chemical compounds in which the nitro group is present: nitroglycerin.
Also, especially before a vowel, nitr-.


Origin:
combining form of Greek nítron. See niter

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World English Dictionary
nitro- or (before a vowel) nitr-
 
combining form
1.  indicating that a chemical compound contains a nitro group, -NO2: nitrobenzene
2.  indicating that a chemical compound is a nitrate ester: nitrocellulose
 
[from Greek nitronnatron]
 
nitr- or (before a vowel) nitr-
 
combining form
 
[from Greek nitronnatron]

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

nitro- or nitr-
pref.

  1. Nitrate; nitrogen: nitrogenase.

  2. Containing the univalent radical NO2: nitrous.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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