a combining form used in the names of chemical compounds in which the amino group is present: aminobenzene.
Origin of amino-
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
indicating the presence of an amino groupaminobenzoic acid
Word Origin for amino-
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
1887, as an element in compound words involving chemicals, from comb. form of amine. Amino acid is attested from 1898.
Online Etymology Dictionary, © 2010 Douglas Harper
Containing the radical NH2 combined with a nonacid organic radical:aminobenzoic acid.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.