methionine
noun
me·thi·o·nine
mə-ˈthī-ə-ˌnēn 
: a crystalline sulfur-containing essential amino acid C5H11NO2S that occurs in the levorotatory form as a constituent of many proteins
Examples of methionine in a Sentence
Recent Examples on the Web
It is made up of three main amino acids—glycine, arginine, and methionine.
—
Jillian Kubala, Health, 12 Aug. 2024
What is Creatine? Creatine is made from three amino acids: glycine, arginine, and methionine.
—Staff Author, Health, 6 Aug. 2024
Your body makes creatine from three amino acids: arginine, glycine, and methionine.
—Elizabeth Barnes, Verywell Health, 6 Aug. 2024
Another food that can affect urine odor is broccoli, which Savage says is metabolized in similar fashion to asparagus, including the excretion of methionine and its related sulfur smell.
—Daryl Austin, USA TODAY, 14 July 2024
See all Example Sentences for methionine 
Jillian Kubala, Health, 12 Aug. 2024
What is Creatine? Creatine is made from three amino acids: glycine, arginine, and methionine.
—Staff Author, Health, 6 Aug. 2024
Your body makes creatine from three amino acids: arginine, glycine, and methionine.
—Elizabeth Barnes, Verywell Health, 6 Aug. 2024
Another food that can affect urine odor is broccoli, which Savage says is metabolized in similar fashion to asparagus, including the excretion of methionine and its related sulfur smell.
—Daryl Austin, USA TODAY, 14 July 2024
See all Example Sentences for methionine
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'methionine.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
Dictionary Entries Near methionine
Cite this Entry
“Methionine.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/methionine. Accessed 11 Sep. 2024.
Copy CitationMedical Definition
methionine
noun
me·thi·o·nine
mə-ˈthī-ə-ˌnēn
: a crystalline sulfur-containing essential amino acid C5H11NO2S that occurs in the L-form as a constituent of many proteins (as casein and egg albumin), that is important especially as a source of sulfur for the biosynthesis of cysteine and as a source of methyl groups for transmethylation reactions (as in the biosynthesis of choline, creatine, and adrenaline), and that is used as a dietary supplement for human beings and their domestic mammals and poultry and in the treatment of fatty infiltration of the liver
—abbreviation Met
Love words? Need even more definitions?
Merriam-Webster unabridged
Share