murexide Meaning, Definition & Usage

Mu*rex"ide noun
Etymology
L. murex the purple fish, purple.
Definitions
  1. (Chem.) A crystalline nitrogenous substance having a splendid dichroism, being green by reflected light and garnet-red by transmitted light. It was formerly used in dyeing calico, and was obtained in a large quantities from guano. Formerly called also ammonium purpurate.

Webster 1913