Anatomy
eyelid Audio
eye·lid [ ahy-lid ]
Subclass of:
Eye
Definitions related to eyelid:
  • A thin membrane of skin with the purpose of covering and protecting an eye.
    NCI Thesaurus
    U.S. National Cancer Institute, 2021
  • Either of the two movable folds (upper and lower) that protect the anterior surface of the eyeball.
    CRISP Thesaurus
    National Institutes of Health, 2006
  • The section of skin, containing muscle and conjunctiva, that covers and protects the eye.
    CDISC Terminology
    Clinical Data Interchange Standards Consortium (CDISC), 2021
  • Each of the upper and lower folds of SKIN which cover the EYE when closed.
    NLM Medical Subject Headings
    U.S. National Library of Medicine, 2021
  • The eyelids act to protect the anterior surface of the globe from local injury. Additionally, they aid in regulation of light reaching the eye; in tear film maintenance, by distributing the protective and optically important tear film over the cornea during blinking; and in tear flow, by their pumping action on the conjunctival sac and...
    Medscape
    WebMD, 2019
  • Eyelid, movable tissue, consisting primarily of skin and muscle, that shields and protects the eyeball from mechanical injury and helps to provide the moist chamber essential for the normal functioning of the conjunctiva and cornea. The conjunctiva is the mucous membrane that lines the eyelid and...
    Encyclopedia Britannica
    Encyclopedia Britannica, Inc., 2020
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