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a combining form used in the names of chemical compounds in which the −NH 2 group united with an acid radical is present:
(erroneously) amino-.
Also, especially before a vowel, amid-.
Origin Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for amido


combining form
(in chemistry) indicating the presence of an amide group
Word Origin
from amide
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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amido in Medicine

amido- pref.
Having a NH2 radical as well as a CO radical in a compound: amidohydrolase.

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