L-tryp·to·phan 
(ĕl′trĭptə-făn′)
(ĕl′trĭptə-făn′)n.
The biologically active form of the amino acid tryptophan. It is sold as a dietary supplement for use as a sleep aid and mood enhancer.
- incomparable
- incomparableness
- incomparably
- incompatibility
- incompatible
- incompatibleness
- incompatibly
- incompetence
- incompetency
- incompetent
- incompetently
- incomplete
- incomplete abortion
- incomplete dominance
- incomplete flower
- incomplete fracture
- incompletely
- incomplete metamorphosis
- incompleteness
- incompletion
- incompliance
- incompliancy
- incompliant
- incompliantly
- incomprehensibility