1. Sleep inducing
   - soporific, soporiferous, somnific, hypnogogic, hypnagogic

See also: depressant

• carbon monoxide gas
• carbon monoxide poisoning
• carbon nanotube
• carbon neutral
• carbon paper
• carbon price
• carbon process
• carbon sequestration
• carbon sink
• carbon steel
• carbon tax
• carbon tet
• carbon tetrachloride
• carbon tetrahalide
• carbon-14 dating
• carbonaceous
• carbonade
• carbonado
• carbonara
• carbonate
• carbonated
• carbonated water
• carbonation
• Carbondale
• carbonic