selenious acid

noun

, Chemistry.

1. a colorless, crystalline, water-soluble, poisonous powder, H 2 SeO 3 , used chiefly as a reagent.

selenious acid

noun

1. a white soluble crystalline strong dibasic acid analogous to sulphurous acid. Formula: H 2 SeO 3

Word History and Origins

Origin of selenious acid¹

First recorded in 1825–35

Example Sentences

Sulphurous acid has no action on selenic acid, but instantly decomposes the selenious acid.

From Project Gutenberg

When this is dissolved in water it yields a crystalline hydrate of selenious acid (H2SeO3).

From Project Gutenberg

The salts formed by selenious acid (selenites), with the exception of those of the alkali metals, are mostly insoluble in water.

From Project Gutenberg