boric acid

US: /ˈbɔrɪk ˈæsɪd/

WordReference Random House Learner's Dictionary of American English © 2025

bo•ric ac•id /ˈbɔrɪk ˈæsɪd/  n. [uncountable]

1. Chemistry, Drugs a white, crystalline acid, H₃BO₃, used chiefly in making ceramics.

WordReference Random House Unabridged Dictionary of American English © 2025

bo′ric ac′id, 

1. Chemistry, Drugs Also called orthoboric acid. a white, crystalline acid, H₃BO₃, occurring in nature or prepared from borax: used chiefly in the manufacture of ceramics, cements, glass, and enamels, for fireproofing, and in medicine in aqueous solution as a mild antiseptic.
2. Chemistry any of a group of acids containing boron.
• 1865–70

Collins Concise English Dictionary © HarperCollins Publishers::

boric acid noun

1. Also called: orthoboric acid a white soluble weakly acid crystalline solid used in the manufacture of heat-resistant glass and porcelain enamels, as a fireproofing material, and as a mild antiseptic. Formula: H₃BO₃
   Systematic name: trioxoboric(III) acid