leucine

n. essential amino acid obtained through the hydrolysis of proteins (Biochemistry)

Leucine (abbreviated as Leu or L) is an α-amino acid with the chemical formula HO2CCH(NH2)CH2CH(CH3)2. It is an essential amino acid, which means that humans cannot synthesise it. Its codons are UUA, UUG, CUU, CUC, CUA, and CUG. With a hydrocarbon side chain, leucine is classified as a hydrophobic amino acid.
See more at Wikipedia.org...

Leucine /leu·cine/ an essential amino acid necessary for optimal growth in infants and for nitrogen equilibrium in adults. leu·cine n. Abbr. [more]Leucine - Community and Resources

Noun
1. a white crystalline amino acid occurring in proteins that is essential for nutrition; obtained by the hydrolysis of most dietary proteins
(hypernym) essential amino acid

n. leucine, essential amino acid obtained through the hydrolysis of proteins (Biochemistry)