meniscus

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English[edit]

A: The bottom of a concave meniscus.
B: The top of a convex meniscus.
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Etymology[edit]

From Ancient Greek μηνίσκος (mēnískos, crescent), from μήνη (mḗnē, moon)

Pronunciation[edit]

  • (UK, US) IPA(key): /mɛˈnɪs.kəs/, /məˈnɪs.kəs/
  • (file)

Noun[edit]

meniscus (plural meniscuses or menisci)

  1. A crescent moon, or an object shaped like it. [from 17th c.]
    • 1972, Vladimir Nabokov, Transparent Things, McGraw-Hill 1972, p. 19:
      He opened wide both casements; they gave on a parking place four floors below; the thin meniscus overhead was too wan to illumine the roofs of the houses descending toward the invisible lake [...].
  2. (optics) A lens which is convex on one side and concave on the other, being crescent-shaped in cross-section. [from 17th c.]
  3. The curved surface of liquids in tubes, whether concave or convex, caused by the surface tension of the liquid. [from 19th c.]
  4. (anatomy) Either of two parts of the human knee that provide structural integrity to the knee when it undergoes tension and torsion. [from 19th c.]

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