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Ferruginous vs Nigrine - What's the difference?

ferruginous | nigrine |

As an adjective ferruginous

is containing iron.

As a noun nigrine is

a ferruginous variety of rutile.

ferruginous

English

Adjective

(en adjective)
  • Containing iron.
  • Rusty.

    • Derived terms

    * ferruginous hawk * ferruginous duck

    nigrine

    English

    Noun

  • (mineralogy) A ferruginous variety of rutile.
    • (Webster 1913)