Simple Definition of collagen

from our Learner's Dictionary

collagen

noun

: 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

Cite this Entry

“Collagen.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/collagen. Accessed 19 Jun. 2026.

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