cys·te·ine | \ ˈsi-stə-ˌēn 
\
\Definition of cysteine
: a crystalline sulfur-containing amino acid C3H7NO2S readily oxidizable to cystine
Examples of cysteine in a Sentence
Recent Examples on the Web The researchers received funding from Catapult Cat Oy, which sells the L-cysteine supplements.
—
Andrew Stuttaford, National Review, "The Capital Note: Coronavirus Winners & Losers," 20 Aug. 2020 The researchers received funding from Catapult Cat Oy, which sells the L-cysteine supplements.
—
Andrew Stuttaford, National Review, "The Capital Note: Coronavirus Winners & Losers," 20 Aug. 2020 That amino acid is supposed to be cysteine, and has been in all humans examined to this point.
—
Mark Johnson And Kathleen Gallagher, Milwaukee Journal Sentinel, "One in a billion: Researchers seek clues in Nicholas' DNA -- and find more than they expected.," 21 Dec. 2010 The researchers received funding from Catapult Cat Oy, which sells the L-cysteine supplements.
—
Andrew Stuttaford, National Review, "The Capital Note: Coronavirus Winners & Losers," 20 Aug. 2020 The researchers received funding from Catapult Cat Oy, which sells the L-cysteine supplements.
—
Andrew Stuttaford, National Review, "The Capital Note: Coronavirus Winners & Losers," 20 Aug. 2020 The researchers received funding from Catapult Cat Oy, which sells the L-cysteine supplements.
—
Andrew Stuttaford, National Review, "The Capital Note: Coronavirus Winners & Losers," 20 Aug. 2020 The researchers received funding from Catapult Cat Oy, which sells the L-cysteine supplements.
—
BostonGlobe.com, "Brightcove names HBS professor, Google exec to board," 19 Aug. 2020 Turmeric chicken soup Chicken soup has been scientifically proven to relieve congestion thanks to the mucus-busting properties of cysteine.
—
oregonlive, "Stock your freezer with these 15 hearty soup recipes – just in case," 6 Mar. 2020
See MoreThese example sentences are selected automatically from various online news sources to reflect current usage of the word 'cysteine.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Keep scrolling for more
Keep scrolling for more
More Definitions for cysteine
cysteine
nouncys·teine | \ ˈsis-tə-ˌēn \
\Medical Definition of cysteine
: a sulfur-containing amino acid C3H7NO2S occurring in many proteins and glutathione and readily oxidizable to cystine —abbreviation Cys
Comments on cysteine
What made you want to look up cysteine? Please tell us where you read or heard it (including the quote, if possible).
Test Your Vocabulary
Namesakes Word Quiz
- Which of the following is a fruit named after a Moroccan seaport?
Can you spell these 10 commonly misspelled words?
TAKE THE QUIZ
Test Your Knowledge - and learn some interesting things along the way.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridgedWords at Play
Ask the Editors
Word Games
Share cysteine
Time Traveler for cysteine
The first known use of cysteine was in 1884
See more words from the same year