Webster's 1913 Dictionary
PROTAMIN
Pro "ta *min, n. Etym: [Gr. (Physiol. Chem. )
Defn: An amorphous nitrogenous substance found in the spermatic fluid of salmon. It is soluble in water, which an alkaline reaction, and unites with acids and metallic bases.
New American Oxford Dictionary
protamine
prot a mine |ˈprōtəˌmēn ˈproʊdəˌmin | ▶noun Biochemistry any of a group of simple proteins found combined with nucleic acids, esp. in fish sperm. ORIGIN late 19th cent.: from proto- ‘original ’ + amine .
Oxford Dictionary
protamine
protamine |ˈprəʊtəmiːn | ▶noun Biochemistry any of a group of simple proteins found combined with nucleic acids, especially in fish sperm. ORIGIN late 19th cent.: from proto- ‘original ’ + amine .
Duden Dictionary
Protamin
Pro t a min , Pro tamin Substantiv, Neutrum Chemie , das |Protam i n |das Protamin; Genitiv: des Protamins, Plural: die Protamine griechisch-neulateinisch einfacher, schwefelfreier Eiweißkörper
The Wordsmith Dictionary