col·​la·​gen | \ˈkä-lə-jən \

Definition of collagen 

: any of a group of fibrous proteins that occur in vertebrates as the chief constituent of connective tissue fibrils and in bones and yield gelatin and glue upon boiling with water

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Other Words from collagen

collagenous \kə-​ˈla-​jə-​nəs \ adjective

Examples of collagen in a Sentence

Recent Examples on the Web

Collagen Peptides There are two amino acids in the protein collagen — proline and glycine — that are essential for the formation and repair of joints, bones, muscles, and tendons, Dr. Bowe says. Amy Capetta, Woman's Day, "5 Anti-Aging Supplements That May Actually Work," 16 Oct. 2018 The collagen is found in the bone and tissues of these animals. Kaleigh Fasanella, Allure, "The Truth About Drinking Collagen Supplements for Better Skin," 14 Sep. 2018 True, the collagen starts to melt at about the same point as the stall kicks in, but according to Blonder's calculations, that's just coincidence. Jennifer Ouellette, Ars Technica, "The secret to successful BBQ pork butt and brisket is science," 1 Sep. 2018 Because the collagen in the bones was too decayed for radiocarbon dating, the researchers estimated the age of the mastodon bones and tools using uranium dating. John Wenz, Popular Mechanics, "Jaw-Dropping Study Says Some Human Relative Was in California 130,000 Years Ago," 26 Apr. 2017 One of the brand's best-sellers, this hydrating face cream combines collagen and hyaluronic acid to plump fine lines and wrinkles, while niacin, peptides, a ceramide complex help lock in moisture. Lindsay Schallon, Glamour, "The It Cosmetics Foundation I Tell Everyone About Is 25 Percent Off," 2 Nov. 2018 Inflammation throughout your body turns on enzymes that break down collagen and leads to the production of free radicals, which can damage cells. Dr. Melina Jampolis, CNN, "Aging gracefully: Tightening your skin safely and effectively," 16 May 2018 The supplement contains trenella mushrooms and a type of vitamin E that helps preserve collagen—and doubles as a great milk substitute, according to Bacon. Deanna Pai, Bon Appetit, "Moon Juice Founder Amanda Chantal Bacon Has a New Beauty Line and, Fine, I'm Into It," 25 June 2018 The collagen recovered from the skin also holds the seasoning close to each morsel, delivering the flavorful intensity of long-marinated tuna without the petrified chew. Ali Bouzari,, "Housemade: The magic of Liholiho Yacht Club," 22 June 2018

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

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First Known Use of collagen

circa 1865, in the meaning defined above

History and Etymology for collagen

Greek kolla + International Scientific Vocabulary -gen

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Statistics for collagen

Last Updated

10 Dec 2018

Look-up Popularity

Time Traveler for collagen

The first known use of collagen was circa 1865

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English Language Learners Definition of collagen

: a substance that occurs naturally in the bodies of people and animals and is often put into creams and other products that are sold to make a person's skin smoother and less wrinkled


col·​la·​gen | \ˈkäl-ə-jən \

Medical Definition of collagen 

: an insoluble fibrous protein of vertebrates that is the chief constituent of the fibrils of connective tissue (as in skin and tendons) and of the organic substance of bones and yields gelatin and glue on prolonged heating with water

Other Words from collagen

collagenic \ˌkäl-​ə-​ˈjen-​ik \ adjective
collagenous \kə-​ˈlaj-​ə-​nəs \ adjective

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More from Merriam-Webster on collagen

Nglish: Translation of collagen for Spanish Speakers

Britannica English: Translation of collagen for Arabic Speakers Encyclopedia article about collagen

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a nest or breeding place

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