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formic acid

American  

noun

Chemistry, Pharmacology.
  1. a colorless, irritating, fuming, water-soluble liquid, CH 2 O 2 , originally obtained from ants and now manufactured synthetically, used in dyeing and tanning and in medicine chiefly as a counterirritant and astringent.


formic acid British  

noun

  1. Systematic name: methanoic acid.  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: HCOOH

"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

formic acid Scientific  
/ fôrmĭk /
  1. 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: CH 2 O 2 .


Etymology

Origin of formic acid

First recorded in 1785–95

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

As the body attempts to clear methanol - breaking it down or metabolising it in the liver - an enzyme converts it to formaldehyde and formic acid.

From BBC Jul. 18, 2026

For every molecule of pigment generated, the cell also produced one molecule of formic acid.

From Science Daily Nov. 3, 2025

This metabolism creates toxic by-products called formaldehyde, formate and formic acid.

From BBC Nov. 22, 2024

The formic acid then evaporates as the noodle flies through the air to the metal plate.

From Science Daily Nov. 21, 2024

The inflammation caused by the sting of the bee is due to formic acid.

From An Elementary Study of Chemistry by William McPherson

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