English

Noun

Homberg's phosphorus ‎(uncountable)

1. (obsolete, inorganic chemistry) A poorly-characterized phosphorescent substance obtained by heating calcium chloride.
   • 1829 Thomas Curtis - The London encyclopaedia, or, Universal dictionary of science, art, literature, and practical...

     and Homberg found, that if it (muriate of lime) was urged by a violent heat till it condensed, on cooling, into a vitreous mass, it emitted a phosphoric light upon being struck by any hard body, in which state it was called Homberg's phosphorus