hydrogensulfide
nounUK /ˈhaɪdrədʒən ˈsʌlfaɪd/
US /ˈhaɪdrədʒən ˈsʌlfaɪd/
A gas that smells like rotten eggs and is made of hydrogen and sulfur.
The rotten-egg smell in the lab came from a small amount of hydrogen sulfide.
RELATED WORDS
OTHER MEANINGS
2. A chemical compound with the formula H2S that is toxic in high concentrations.
Workers must wear monitors because hydrogen sulfide can be deadly in enclosed spaces.
3. A naturally occurring gas released by decaying organic matter and volcanoes.
Hydrogen sulfide rises from the swamp as plants and animals break down.
4. A weak acid when dissolved in water, used in chemical analysis.
The chemist tested for metal ions using hydrogen sulfide in solution.