Definition of threonine
: a colorless crystalline essential amino acid C4H9NO3
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Origin and Etymology of threonine
probably from threonic acid (C4H8O5)
First Known Use: 1936
Medical Dictionary
threonine
play
noun
thre·o·nine
\ˈthrē-ə-ˌnēn\
Medical Definition of threonine
: a colorless crystalline essential amino acid C4H9NO3 that is found in various proteins—abbreviation Thr
Learn More about threonine
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Britannica.com: Encyclopedia article about threonine
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