ferruginate

transitive verb

fer·​ru·​gi·​nate

fəˈrüjəˌnāt,

feˈ-

-ed/-ing/-s

: to charge or stain (as rock) with a compound of iron

ferrugination

⸗ˌ⸗⸗ˈnāshən

noun

plural -s

Word History

Etymology

ferruginous + -ate

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