Definitions

1. noun

A salt of sulphurous acid, or any of several compounds in which a hydrogen atom of the acid is replaced by a metal atom.

“The food preservation method involves adding potassium sulphite to the product.”

2. verb

To treat with sulphite, especially to preserve food by preventing oxidation.

“The manufacturer sulphites the wine to prevent spoilage.”

3. chemistry

A salt or ester of sulphurous acid.

“Sulphite is commonly used in wine and beer preservation.”