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elastin

American

[ih-las-tin] / ɪˈlæs tɪn /

noun

Biochemistry.

a protein constituting the basic substance of elastic tissue.

elastin British

/ ɪˈlæstɪn /

noun

biochem a fibrous scleroprotein constituting the major part of elastic tissue, such as the walls of arteries

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of elastin

First recorded in 1870–75; elast(ic) + -in ²

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

In arteries, it showed alternating collagen and elastin layers that support both strength and elasticity.

From Science Daily • Dec. 9, 2025

For instance, one study concluded that GLP-1 drugs cause certain stem cells to behave differently—in particular, the ones that produce collagen and elastin, which are important skin boosters that are diminished by rapid weight loss.

From Slate • Aug. 21, 2025

"This allows new blood vessels and skin cells to be formed, along with more collagen and elastin," he tells the BBC.

From BBC • Mar. 7, 2025

Significant numbers also noted more muscle tone and lift, fewer wrinkles and increased skin collagen and elastin.

From Seattle Times • Sep. 30, 2022

Two proteins exist in connective tissue, viz., collagen and elastin.

From School and Home Cooking by Greer, Carlotta Cherryholmes

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023