realgar
UK /ɹiˈæl.ɡɑː/ · US /ɹiˈæl.ɡɑɹ/ noun
Forms realgars rosaker resalgar resegall resegallum
- noun (mineralogy) A mineral, arsenic sulfide (AsS), often associated with orpiment and stibnite in lead, silver and gold ores.
Synonyms
Etymology
From Middle English realgar, from Medieval Latin realgar, resalgar, from Arabic رَهْج اَلْغَار (rahj al-ḡār, literally “cave dust”).
Webster’s 1913
- noun Arsenic sulphide, a mineral of a brilliant red color; red orpiment. It is also an artificial product.
Etymology [F. réalgar, Sp. rejalgar, Ar. rahj al ghar powder of the mine.]
Sources: Wiktionary · Webster’s 1913 — from the Wiktionary entry “realgar”, CC BY-SA 4.0. Details