Definitions

1. noun

an amino acid that is a precursor of many peptide hormones, including thyrotropin-releasing hormone and growth hormone-releasing hormone.

“Threonine is an essential amino acid for the human body.”

2. noun

a branched-chain amino acid, especially one that is involved in the synthesis of proteins.

“Threonine is a branched-chain amino acid that plays a crucial role in the body’s protein synthesis.”