realgar

[ ree-al-ger, -gahr ]
/ riˈæl gər, -gɑr /

noun

arsenic disulfide, As2S2, found in nature as an orange-red mineral and also produced artificially: used in pyrotechnics.
Also called red orpiment.

Origin of realgar

1350–1400; Middle English < Medieval Latin realger ≪ Arabic rahj al-ghār powder of the mine or cave

Example sentences from the Web for realgar

British Dictionary definitions for realgar

realgar
/ (rɪˈælɡə) /

noun

a rare orange-red soft mineral consisting of arsenic sulphide in monoclinic crystalline form. It occurs in Utah and Romania and as a deposit from hot springs. It is an important ore of arsenic and is also used as a pigment. Formula: AsS

Word Origin for realgar

C14: via Medieval Latin from Arabic rahj al-ghar powder of the mine