leucine.
An essential amino acid, C₆H₁₃NO₂, isomeric with isoleucine, found in most animal proteins; it is essential for growth in children.
Meaning & usage
An essential amino acid, C₆H₁₃NO₂, isomeric with isoleucine, found in most animal proteins; it is essential for growth in children.
Where this word comes from
Etymology tree Proto-Indo-European *lewk- Proto-Indo-European *-ós Proto-Indo-European *lewkós Proto-Hellenic *leukós Ancient Greek λευκός (leukós) English -ine English leucine Derived from Ancient Greek λευκός (leukós, “white”) + -ine, equivalent to leuco- + -ine.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.