Definitions

1. noun

A salt of sulphurous acid; especially, the sodium salt, used as a preservative.

“The winemaker used bisulphite to sterilize the equipment and prevent contamination.”

2. chemistry

A salt of bisulphite acid.

“The chemist synthesized a new bisulphite compound for further analysis.”

3. verb

To preserve or sterilize with bisulphite.

“The chef bisulphited the fruit to prevent browning.”