from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A red, yellow, or brown mineral, essentially HFeO2, one of the common constituents of rust.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. An iron oxyhydroxide that is the main constituent of rust
from the GNU version of the Collaborative International Dictionary of English
- n. an oxide of iron.
from The Century Dictionary and Cyclopedia
- n. A hydrous oxid of iron, occurring in orthorhombic crystals, also massive. It is found with other ores of iron, for example hematite or limonite, as at the Lake Superior mines.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a red or yellow or brown mineral; an oxide of iron that is a common constituent of rust
After Johann Wolfgang von Goethe.(American Heritage® Dictionary of the English Language, Fourth Edition)
Named for German polymath Johann Wolfgang von Goethe. (Wiktionary)