The Collaborative International Dictionary
Ferruginous \Fer*ru"gi*nous\ (f[e^]r*r[udd]"j[i^]*n[u^]s), a. [L. ferruginus, ferrugineus, fr. ferrugo, -ginis, iron rust: cf. F. ferrugineux. See Ferrugo.]
Partaking of iron; containing particles of iron.
--Boyle.Resembling iron rust in appearance or color; brownish red, or yellowish red.
Wiktionary
a. 1 Containing iron. 2 rusty.
Wikipedia
Ferruginous may refer to:
- Having rust on the surface
- Rust (color)
Usage examples of "ferruginous".
The actions of the alkalis and of increased temperature are probably closely related, for in either case the clay is brought nearer to its fusion point, and ferruginous clays generally become darker in colour as they approach to fusion.
The Gebel el Dist member is typically described as “made up of fine-grained, well-bedded, ferruginous [iron-rich] clastics [grainy rock] carrying a large number of fossils including vertebrates in the lower levels and an assortment of oysters and other fossils in middle and upper layers.