Definitions
American Heritage® Dictionary of the English Language, Fourth Edition
- n. The mucous membrane that lines the inner surface of the eyelid and the exposed surface of the eyeball.
Century Dictionary and Cyclopedia
- n. In anat, the mucous membrane which lines the inner surface of the eyelids and thence is reflected over the front of the eyeball, thus conjoining the lids and the globe of the eye: a contraction of tunica conjunctiva. In low vertebrates it is rudimentary and non-secretory, or not to be demonstrated; in the higher vertebrates which have eyelids it is well defined. In birds and many reptiles and mammals it forms a special fold, chiefly constituting the nictitating membrane or third eyelid. It is very delicate where it passes over the cornea, offering no impediment to vision, In snakes which have no eyelids a delicate cuticle continues from the skin over the eye, and is shed with the rest of the cuticle. The membrane is regarded as one of the tunics or coats of the eyeball, like the tunica sclerotica, etc.
- n. In entom., the membrane uniting two sclerites, or hard parts of the integument, which move freely on each other.
Wiktionary
- n. anatomy A clear mucous membrane that lines the inner surface of the eyelid and the exposed surface of the eyeball or sclera.
GNU Webster's 1913
- n. (Anat.) The mucous membrane which covers the external surface of the ball of the eye and the inner surface of the lids; the conjunctival membrane.
WordNet 3.0
- n. a transparent lubricating mucous membrane that covers the eyeball and the under surface of the eyelid
Etymologies
- Middle English, from Medieval Latin (membrāna) coniūnctīva, connective (membrane), feminine of Late Latin coniūnctīvus, connective, from Latin coniūnctus, past participle of coniungere, to join together; see conjoin. (American Heritage® Dictionary of the English Language, Fourth Edition)
Examples
“By soiling the natives 'skin; they are easily inoculated by scratching or by soiling the fingers, which are then brought into contact with the conjunctiva, which is an ideal means of entry for such an active virus.”
“The inner lining membrane of the eyelids is known as the conjunctiva; it is richly supplied with blood-vessels and nerves.”
“The conjunctiva is the mucous membrane of the eye.”
X. The Organs of the Senses and the Common Integument. 1c. 3. The Accessory Organs of the Eye
“The conjunctiva is the thin, clear membrane covering the white part of the eye.”
“The face relaxed, the lids half closed on the eyeballs, leaving only the white of the conjunctiva visible, exactly as in the dying whom we have occasion to see every day in the exercise of our profession, or as in those just dead.”
“It's a catch-all description for inflammation of the conjunctiva, the membranes that line the eyelid and the surface of the eye.”
“It is likely", they write, "that this mode of transmission is underestimated, as a history of ejaculation into the conjunctiva is not normally asked for.”
“It refers to the inflammation of the conjunctiva, the thin transparent membrane covering the front of the eye.”
“The moist membrane that lines the under surface of the eyelids and covers the "white" part of the eye (up to the circular margin of the cornea) is called conjunctiva.”
“It was widely accepted that trachoma was a disease of the palpebral conjunctiva, and the different stages of trachoma were described in detail.”
Trachoma in late Greek antiquity and the early Byzantine periods
Lists
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