Origin of monobasic

First recorded in 1835–45; mono- + basic
Related formsmon·o·ba·sic·i·ty [mon-uh-bey-sis-i-tee] /ˌmɒn ə beɪˈsɪs ɪ ti/, noun Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for monobasic

Historical Examples of monobasic

British Dictionary definitions for monobasic


  1. chem (of an acid, such as hydrogen chloride) having only one replaceable hydrogen atom 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

monobasic in Medicine


  1. Having only one hydrogen ion to donate to a base in an acid-base reaction.
  2. Having only one metal ion or positive radical.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

monobasic in Science


  1. Relating to an acid that contains only one hydrogen atom that can be replaced in an acid-base reaction. Hydrochloric acid (HCl) and nitric acid (HNO3) are monobasic acids.
  2. Of or relating to a compound that contains one metal ion or positive radical.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.