Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun sulfur_dioxide

1 sense of sulfur dioxide

Sense 1
sulfur dioxide, sulphur dioxide -- (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)
       => dioxide -- (an oxide containing two atoms of oxygen in the molecule)
       => gas -- (a fluid in the gaseous state having neither independent shape nor volume and being able to expand indefinitely)
       => pollutant -- (waste matter that contaminates the water or air or soil)