0 a weak acid made from borax, used as an antiseptic (= a substance that kills bacteria) and in making glass:
Items that would have been in an early 19th-century physician's medical bag include boric acid for use as an antiseptic.
Tablets made of boric acid, floor wax, and yellow paint had been made to look like the drug.
They prefer to tackle the rats using traps and relatively non-toxic chemicals such as boric acid.
The bamboo strips are boiled in water and boric acid to kill any bugs or fungus.
Leaking boric acid caused the red, rusty deposits on this nuclear reactor vessel.
