Definition of elastin in US English:



  • A protein forming the main constituent of elastic connective tissue, found especially in the dermis of the skin.

    • ‘Molecular chromophores besides melanin abound in the skin and include keratin, collagen, elastin, proteins, lipids, steroids and urocanic acid to name a few.’
    • ‘The dermis also helps regulate collagen and elastin, protein fibers that keep skin soft, and help it to adjust its size to accommodate your growing body.’
    • ‘Protein is crucial for the production of collagen and elastin, the protein fibres that keep skin supple and elastic’
    • ‘The proteins (collagen and elastin fibrils) are the base of the interstitial matrix.’
    • ‘Designed silk-like materials have been made in this way, as well as protein-related synthetic materials similar to collagen and elastin, an elastic protein in skin.’


Late 19th century: from elastic + -in.