from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Alternative spelling of sulfur dioxide.
from the GNU version of the Collaborative International Dictionary of English
- n. a colorless gas, SO2, of a pungent, suffocating odor, produced by the burning of sulphur. It is employed chiefly in the production of sulphuric acid, and as a reagent in bleaching; -- called also sulphurous anhydride, and formerly sulphurous acid.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a colorless toxic gas (SO2) that occurs in the gases from volcanoes; used in many manufacturing processes and present in industrial emissions; causes acid rain
Sorry, no etymologies found.