nitrate: Meaning and Definition of

ni•trate

1. a salt or ester of nitric acid, or any compound containing the univalent group –ONO or NO.
2. fertilizer consisting of potassium nitrate or sodium nitrate.
3. cellulose nitrate, a substance used as a film base in the early days of filmmaking.
4. See

1. to treat with nitric acid or a nitrate.
2. to convert into a nitrate.