formic acid

noun

for·​mic acid ˈfȯr-mik- 

: a colorless pungent fuming vesicant liquid acid CH₂O₂ found especially in ants and in many plants and used chiefly in dyeing and finishing textiles

Examples of formic acid in a Sentence

Recent Examples on the Web

The scientists experimented with formic acid, a molecule that ants generate as venom against predators. —IEEE Spectrum, 3 Jan. 2024

The team also found simple molecules of formic acid, which causes the burning sensation associated with ant stings, as well as sulfur dioxide, methane and formaldehyde. —Ashley Strickland, CNN, 15 Mar. 2024

The trees provide nectar and shelter for native ants, and to return the favor, these ants protect them from animals looking to take a bite to eat; whenever herbivores try to eat from the tree, the ants start biting and emitting formic acid to stave them off. —Jack Knudson, Discover Magazine, 25 Jan. 2024

Moreover, formic acid is liquid at room temperature and pressure, simplifying its transportation when compared to hydrogen gas, Cortés adds. —IEEE Spectrum, 3 Jan. 2024

Word History

Etymology

irregular from Latin formica ant — more at pismire

First Known Use

1790, in the meaning defined above

Kids Definition

formic acid

noun

for·​mic acid ˌfȯr-mik- 

: a colorless strong-smelling acid that irritates the skin, is found in insects (as ants) and in many plants, and is used chiefly in dyeing and finishing woven fabrics

Medical Definition

formic acid

noun

: a colorless pungent fuming vesicant liquid acid CH₂O₂ found especially in ants and in many plants and used chiefly in dyeing and finishing textiles