- a colorless, irritating, fuming, water-soluble liquid, CH2O2, originally obtained from ants and now manufactured synthetically, used in dyeing and tanning and in medicine chiefly as a counterirritant and astringent.
Origin of formic acid
First recorded in 1785–95
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- a colourless corrosive liquid carboxylic acid found in some insects, esp ants, and many plants: used in dyeing textiles and the manufacture of insecticides and refrigerants. Formula: HCOOHSystematic name: methanoic acid
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
- A colorless caustic fuming liquid used in dyeing and finishing textiles and paper and in the manufacture of fumigants, insecticides, and refrigerants.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
- A colorless, caustic, fuming liquid that occurs naturally as the poison of ants and stinging nettles. It is used in making textiles and paper and in insecticides. Formic acid is the simplest organic acid, containing a carboxyl (COOH) group attached to a hydrogen atom. Chemical formula: CH2O2.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.