1. Outside or beyond a galaxy
   "extragalactic nebula"

See also: galaxy

• gas company
• gas constant
• gas cooker
• gas embolism
• gas engine
• gas fitter
• sulfa
• sulfa drug
• sulfacetamide
• sulfadiazine
• sulfamethazine
• sulfamethoxazole
• sulfamezathine
• sulfanilamide
• sulfanilic acid
• sulfapyridine
• sulfate
• sulfide
• sulfisoxazole
• sulfonamide
• sulfonate
• sulfone
• sulfonic acid
• sulfonylurea
• sulfur