EXAMPLES | WORD ORIGIN noun arsenic disulfide, As 2S 2, found in nature as an orange-red mineral and also produced artificially: used in pyrotechnics. Origin of realgar 1350–1400; Middle English < Medieval Latin realger ≪ Arabic rahj al-ghār powder of the mine or cave
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for realgar Historical Examples of realgar
Realgar: The Chinese believe that realgar is a mithridate and tonic.
To the unctuous juices belong these species: sulphur, bitumen,
realgar and orpiment.
In former times, orpiment, like
realgar, was employed in medicine.
A mounting medium of the highest refractive index, such as
realgar, is required to resolve the stri.
An alternative to the above process is to hasten the earlier part of the liming by employing sodium sulphide instead of
realgar. British Dictionary definitions for realgar 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
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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