Definitions

1. noun

a yellowish or yellow-green brittle nonmetallic element that is highly toxic and highly reactive in air, especially when it is ignited, and is used in matches, explosives, and in the manufacture of sulfuric acid.

“The sulfur emissions from the factory caused air pollution.”

2. noun

a bright yellow or yellowish-brown powder used in matches, fireworks, and as a disinfectant.

“She applied sulfur powder to the affected skin to treat the fungal infection.”