different between meniscus vs meniscectomy

English

From Ancient Greek ???????? (m?nískos, “crescent”), from ???? (m?n?, “moon”)

meniscus (plural meniscuses or menisci)

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 [...].
(optics) A lens which is convex on one side and concave on the other, being crescent-shaped in cross-section. [from 17th c.]
The curved surface of liquids in tubes, whether concave or convex, caused by the surface tension of the liquid. [from 19th c.]
(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.]

meniscus +? -ectomy

meniscectomy (plural meniscectomies)

(surgery) Removal of the meniscus (cartilage) of a joint (especially of the knee).

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