sulfuretted hydrogen
nounUK /ˈsʌlfjʊrɛtɪd ˈhaɪdrədʒən/
US /ˈsʌlfjʊrɛtɪd ˈhaɪdrədʒən/
A gas that smells like rotten eggs and is made of sulfur and hydrogen.
The lab smelled awful because a little sulfuretted hydrogen had escaped from the bottle.
OTHER MEANINGS
2. A colorless, poisonous gas formed when organic matter decays without oxygen.
Sulfuretted hydrogen can build up in sewers and must be vented safely.
3. The old-fashioned chemical name for hydrogen sulfide, still used in some textbooks.
Older chemistry books list sulfuretted hydrogen as a test for metal ions.
4. A gas sometimes found naturally in volcanic areas and mineral springs.
Near the hot springs, visitors noticed the sharp smell of sulfuretted hydrogen.