The Open Dictionary

epithelial

adjective

UK/ˌep.ɪˈθiː.li.əl/
US/ˌep.ɪˈθiː.li.əl/

Definitions of epithelial adjective

  1. medical

    Of or relating to the epithelium, the cellular layer covering most internal and external body surfaces.

    • Epithelial cells are crucial in protecting the body's surfaces, both internal and external.

    • The respiratory tract is lined with epithelial cells.

    • Some types of cancer originate in epithelial cells.