phosphated
/ˈfɒsfeɪtɪd/adjective
1Chiefly Chemistry. Converted into a phosphate; combined with or containing phosphoric acid or a phosphate group.
2Treated with a phosphate or phosphates; phosphatized.
Origin
Early 19th century; earliest use found in Medical and Physical Journal. From phosphate + -ed. Compare French phosphaté consisting of phosphate or containing phosphate.