Dictionary
sul•fur•ous
Pronunciation: (sul'fur-us, sul-fyoor'us), [key]—
adj.
1. of, pertaining to, or containing sulfur, esp. in the tetravalent state.
2. of the yellow color of sulfur.
3. sulphurous (defs. 2, 3).
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.