amino acid

noun

Definition of amino acid

: an amphoteric organic acid containing the amino group NH2 especially : any of the various amino acids having the amino group in the alpha position that are the chief components of proteins and are synthesized by living cells or are obtained as essential components of the diet

Examples of amino acid in a Sentence

Recent Examples on the Web

The deal with complete vs. incomplete proteins The 20 different amino acids can be divided into two main groups: essential and non-essential. Carolyn L. Todd, SELF, "Does It Make a Difference if You Get Your Protein from Plants or Animals?," 28 Aug. 2019 Kát Rudu’s Sanctuary Glow Hemp Serum utilizes phytocannabinoid-rich hemp oil which is packed with omega-6 &-9, amino acids, minerals, and vitamins B, C & E. The silky serum absorbed quickly and left the skin feeling luxuriously moisturized. Los Angeles Times, "Rosacea treatments: 10 creams, lotions and salves that promise to save your skin," 28 Aug. 2019 Creatine is a non-essential amino acid, which means that our bodies have the ability to manufacture it from other amino acids. Nutrition Diva Monica Reinagel, Scientific American, "Is a Vegetarian Diet Bad for Your Brain?," 2 Aug. 2019 Consuming collagen is a particularly great way to get more conditional amino acids, like arginine, glutamine, glycine and proline. Better Health Market, Detroit Free Press, "The top 5 ways collagen can help your body run better," 30 July 2019 Sheet masks work by creating a barrier which prevents the ingredients (such as antioxidants, vitamins or amino acids) from evaporating. Nikhita Mahtani, CNN Underscored, "10 top-rated sheet masks you can buy on Amazon right now," 11 Sep. 2019 The internist in Manhattan put me on injections of an amino acid derived from the livers of Argentine cows. Mike Mariani, The New Yorker, "A Town for People with Chronic Fatigue," 3 Sep. 2019 Meanwhile, the antioxidants and amino acids are great for overall hair health. Jessica Ourisman, Good Housekeeping, "What Rice Water Can Do For Your Hair, According to Experts," 5 Aug. 2019 There are candies and brownies, too, all marketed as calming or anxiety-alleviating, with detailed explanations of how the herbal supplements, amino acids or compounds within can put us at ease. Maura Judkis, Twin Cities, "A dozen stress-relief snacks, tinctures and teas later, and she’s still anxious," 3 Aug. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'amino acid.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of amino acid

1897, in the meaning defined above

Keep scrolling for more

Learn More about amino acid

Dictionary Entries near amino acid

aminic

aminize

amino

amino acid

aminoaciduria

amino alcohol

aminoazo

Statistics for amino acid

Last Updated

14 Oct 2019

Look-up Popularity

Time Traveler for amino acid

The first known use of amino acid was in 1897

See more words from the same year

Keep scrolling for more

More Definitions for amino acid

amino acid

noun

English Language Learners Definition of amino acid

biology : any one of many acids that occur naturally in living things and that include some which form proteins

amino acid

noun
ami·​no acid | \ ə-ˈmē-nō-\

Kids Definition of amino acid

: any of various acids containing carbon and nitrogen that are building blocks of protein and are made by living plant or animal cells or are obtained from the diet

amino acid

noun

Medical Definition of amino acid

: an amphoteric organic acid containing the amino group NH2 especially : alpha-amino acid

Keep scrolling for more

More from Merriam-Webster on amino acid

Spanish Central: Translation of amino acid

Nglish: Translation of amino acid for Spanish Speakers

Britannica.com: Encyclopedia article about amino acid

Comments on amino acid

What made you want to look up amino acid? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

to fake an opponent out of position

Get Word of the Day daily email!

Test Your Vocabulary

Where in the World? A Quiz

  • peter bruegel tower of babel painting
  • What language does pajama come from?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Citation

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!