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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 of amido- Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for amido
Historical Examples
  • Experiments show that no flavor develops until the amido acids and ammonia are formed.

    The Book of Cheese

    Charles Thom and Walter Warner Fisk
  • The question arises whether these intermediate compounds must be found before other agents can form the amido acids and ammonia.

    The Book of Cheese

    Charles Thom and Walter Warner Fisk
  • The chains of amido acids are split up during hydrolysis, and individual amido acids may thus be separated.

    Animal Proteins Hugh Garner Bennett
  • It will be interesting, however, to mention some of the amido acids and groups commonly occurring in proteids.

    Animal Proteins Hugh Garner Bennett
  • These are soluble in alkalies, acids and water, and are readily hydrolyzed further into amido acids and acid amides.

    Animal Proteins Hugh Garner Bennett
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
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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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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