Lis·ton 
(lĭstən), Sonny 1932-1970.
(lĭstən), Sonny 1932-1970. American boxer who was the world heavyweight champion from 1962 until he was defeated by Muhammad Ali (then Cassius Clay) in 1964.
- opsonic
- opsonin
- opsonization
- opsonize
- -opsy
- opt
- opt.
- optative
- optatively
- optic
- optical
- optical activity
- optical amplifier
- optical art
- optical character reader
- optical character recognition
- optical computer
- optical disc
- optical disk
- optical fiber
- optical illusion
- optical isomer
- optically
- optically active
- optical maser