Ferruginous
/fəˈruː.dʒɪ.nəs/noun
Having the color or appearance of rust or iron oxide; rust-colored.
Did you know?Ferruginous comes from Latin ferrūgineus, from ferrūgo meaning “rust,” ultimately tied to ferrum, “iron,” so the word carries the chemistry of corrosion in its bones.
Etymological Timeline
Proto-Indo-European
PIE
*bʰer-
“to shine, to be bright; the ancient root behind iron and metal terms in Latin”
Latin
Latin
ferrum
“iron”
Latin
Latin
ferrūgo
“rust, iron rust”
Late Latin
Latin
ferrūgineus
“rust-colored, of the color of rust”
Middle English
English
ferruginous
“rust-colored, resembling iron rust”
Modern English
English
ferruginous
“rust-colored; containing iron oxide or having a rusty appearance”