1. A radioactive transuranic metallic element; discovered by bombarding uranium with helium atoms
   - americium, Am

Type of: metal, metallic element

• unsafely
• unsaid
• unsalable
• unsalaried
• unsaleable
• unsalted
• unsanctification
• unsanctified
• unsanctify
• unsanctioned
• unsanded
• unsanitariness
• unsanitary
• unsaponified
• unsarcastic
• unsated
• unsatiable
• unsatiably
• unsatiated
• unsatisfactorily
• unsatisfactoriness
• unsatisfactory
• unsatisfiable
• unsatisfied
• unsatisfying