a white soluble unstable crystalline acid: an oxidizing and reducing agent. Formula: H2N2O2
hyponitrous acid in American English
noun
an unstable, crystalline acid, H2N2O2
Word origin
[1820–30]This word is first recorded in the period 1820–30. Other words that entered Englishat around the same time include: acetate, analogue, blouse, boomerang, exogenous