Learn how to say Tryptophan correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word tryptophan:
[mass noun] Biochemistry
an amino acid which is a constituent of most proteins. It is an essential nutrient in the diet of vertebrates.
An indole derivative; chemical formula: C8H6NCH2CH(NH2)COOH
late 19th century: from tryptic ‘relating to trypsin’ + Greek phainein ‘appear’