Phosphorous
Origin
From phosphorus + -ous.
Adjective
phosphorous- (chemistry) Of or pertaining to phosphorus.
- Resembling phosphorus.
- (chemistry) Of relating to or containing trivalent phosphorus.
Usage notes
Do not confuse phosphorous with phosphorus, which is the noun.
Synonyms
- (of or pertaining to phosphorus): phosphoric
- (resembling phosphorus): phosphoric