1. (of devices and processes) not protected by patent
   "unpatented inventions"

See also: nonproprietary

• amplitude
• amplitude distortion
• amplitude level
• amplitude modulation
• amply
• ampoule
• ampul
• ampule
• ampulla
• ampullar
• ampullary
• amputate
• amputation
• amputator
• amputee
• amrinone
• amrita
• Amsinckia
• Amsinckia grandiflora
• Amsinckia intermedia
• Amsler grid
• Amsonia
• Amsonia tabernaemontana
• Amsterdam
• amt