from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Of, containing, or similar to iron.
- adj. Having the color of iron rust; reddish-brown.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Containing iron.
- adj. Rusty.
from the GNU version of the Collaborative International Dictionary of English
- adj. Partaking of iron; containing particles of iron.
- adj. Resembling iron rust in appearance or color; brownish red, or yellowish red.
from The Century Dictionary and Cyclopedia
- Of the color of iron-rust; light reddish brown.
- Of the nature of or containing iron.
Much more recently the idea of ferruginous particles has been revived, their presence being ascribed not to volcanoes, but to the meteorites constantly being dissipated in the upper atmosphere.
The series in America corresponding to this, entitled the ferruginous sand formation, presents fossils generally identical with those of
The kind of ferruginous pavement of the boulder-clay known to the agriculturist as _pan_, which may be found extending in some cases its iron cover over whole districts, -- sealing them down to barrenness, as the iron and brass sealed down the stump of Nebuchadnezzar's tree, -- is, like the white strips and blotches of the deposit, worthy the careful notice of the geologist.
When a company called Ausra filed plans for a big solar power plant in California, it was deluged with demands from a union group that it study the effect on creatures like the short-nosed kangaroo rat and the ferruginous hawk.
Stuffed birds in flight - roseate spoonbills, a great blue heron, a ferruginous hawk - fill another case.
Their animal of concern was the cactus ferruginous pygmy owl.
The plain has coarse, well-drained, generally ferruginous and relatively infertile soils.
The area supports a number of species locally threatened or at their biogeographic limits, including golden eagle Aquila chrysaetos, prairie falcon Falco mexicanus, ferruginous hawk Buteo regalis, loggerhead shrike Lanius ludovicianus, merlin Falco columbarius, Brewers sparrow Spizella breweri and grasshopper sparrow Ammodramus savannarum.
The numerous raptors here include Swainson's hawk, ferruginous hawk, rough-legged hawk, red-tailed hawk, marsh hawk, prairie falcon, great horned owl, and burrowing owl.
Raptors include the golden eagle, great horned owl, red-tailed hawk, ferruginous hawk, and the rare zone-tailed hawk.