colloidal silver

Noun

 * 1)  colloid consisting of silver particles suspended in liquid, originally used by doctors from the early 20th century until the 1940s (when antibiotics emerged) and then experiencing a revival from about 1990, when it was marketed with scientifically unsupported claims of it being an essential mineral supplement, or that it can prevent or treat numerous diseases

Translations

 * Finnish: kolloidinen hopea
 * German: kolloidales Silber
 * Polish: srebro koloidalne