Definition of conjunctiva in US English:



  • The mucous membrane that covers the front of the eye and lines the inside of the eyelids.

    • ‘Most ocular complications involve the cornea but may also include the conjunctiva, uvea, sclera, retina, and surrounding structures.’
    • ‘This happens as a result of the irritation and widening of the tiny blood vessels in the conjunctiva.’
    • ‘Over the sclera lies the conjunctiva, a clear mucous membrane that protects the eye from becoming dry.’
    • ‘Eyewear covers the cornea, conjunctiva, and other ocular tissue.’
    • ‘The remaining chapters include discussions of tumors of the orbit, eyelid, conjunctiva, cornea and sclera, uvea, and optic nerve.’


Late Middle English: from medieval Latin (membrana) conjunctiva ‘conjunctive (membrane)’, from late Latin conjunctivus, from conjungere ‘join together’ (see conjoin).