ferriferousyoudaoicibaDictYouDict[ferriferous 词源字典]
"Producing or yielding iron; containing iron compounds or ore", Late 18th cent.; earliest use found in Richard Kirwan (1733–1812), chemist and mineralogist. From ferri- + -ferous, originally rendering Swedish järnhaltig.[ferriferous etymology, ferriferous origin, 英语词源]