Definition of ferrugineous in English:

ferrugineous

adjective

  • 1Resembling iron rust in colour; of a reddish brown.

  • 2Containing iron, especially in the form of hydrated oxides.

Origin

Mid 17th century; earliest use found in Thomas Johnson (d. 1644), apothecary and soldier. From classical Latin ferrūgineus of a dark brownish colour, (of taste) rusty + -ous.

Pronunciation

ferrugineous

/fɛrʊˈdʒɪnɪəs/