LS -abbr
- left side
- letter signed
- library science
- place of the seal
LSD [,el-(,)es-'dē] -n
- a semisynthetic illicit organic compound C 20H 25N 3O derived from ergot that induces extreme sensory distortions, altered perceptions of reality, and intense emotional states, that may also produce delusions or paranoia, and that may sometimes cause panic reactions in response to the effects experienced called also lysergic acid diethylamide
LSI -abbr
- large-scale integrated circuit; large-scale integration
LSM -abbr
- letter-sorting machine
LSO -abbr
- landing signal officer
LSS -abbr
- lifesaving service; lifesaving station
- life-support system
LST -abbr
- landing ship, tank
- local sidereal time