• synonyms


[ mon-oh-as-id, mon-oh-as-id ]
/ ˌmɒn oʊˈæs ɪd, ˈmɒn oʊˌæs ɪd /

adjective Also monacidic.

having one replaceable hydrogen atom or hydroxyl radical.
capable of reacting with only one equivalent weight of an acid.


an acid having one replaceable hydrogen atom.

Nearby words

monnet, jean, monnion, mono, mono-, monoacetin, monoacid, monoalphabetic substitution, monoamide, monoamine, monoamine oxidase, monoamine oxidase inhibitor
Also monacid.

Origin of monoacid

First recorded in 1860–65; mono- + acid Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for monoacid


monacid, monoacidic (ˌmɒnəʊəˈsɪdɪk) or monacidic

/ (ˌmɒnəʊˈæsɪd) /


chem (of a base) capable of reacting with only one molecule of a monobasic acid; having only one hydroxide ion per molecule
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

Medicine definitions for monoacid


[ mŏn′ō-ăsĭd ]


An acid having one replaceable hydrogen atom.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.