noun
sulfur
SUL-fer/ˈsʌlfər/
A yellow nonmetallic chemical element with atomic number 16.
Pure sulfur is a yellow solid at room temperature.

Etymology
Latin sulphur already named the element; its deeper origin is uncertain, though it probably comes from a root meaning “to burn.”
In context
we have made it to the heart of the volcano you can smell the sulfur there's actually sulfur just kind of like littered around on the ground here
More examples
- Manufacturers use sulfur to make sulfuric acid.
- Adding sulfur helps harden rubber during tire production.
- Yellow sulfur deposits form around some volcanic vents.
Forms
sulfurous adjective — Containing sulfur or compounds of sulfur.
Similar words
- brimstone
- An older name for sulfur, often used in religious language.