ȯˈranch(ē)ə noun
( -s )
Etymology: New Latin, from Latin aurant-, aurans (present participle of aurare to gild, from aurum gold) + New Latin -ia — more at oriole
: a poisonous red-brown crystalline alcohol-soluble dye C 12 H 8 N 8 O 12 used in biological staining, in desensitizing photographic plates, and in colored photographic filters — the ammonium salt of hexanitrodiphenylamine