Meniscus

[mi-nis-kuh s] /mɪˈnɪs kəs/

noun, plural menisci
[mi-nis-ahy, -nis-kahy, -kee] /mɪˈnɪs aɪ, -ˈnɪs kaɪ, -ki/ (Show IPA), meniscuses.
1.
a crescent or a crescent-shaped body.
2.
the convex or concave upper surface of a column of liquid, the curvature of which is caused by surface tension.
3.
Optics. a lens with a crescent-shaped section; a concavo-convex or convexo-concave lens.
4.
Anatomy. a disk of cartilage between the articulating ends of the bones in a joint.
/mɪˈnɪskəs/
noun (pl) -nisci (-ˈnɪsaɪ), -niscuses
1.
the curved upper surface of a liquid standing in a tube, produced by the surface tension
2.
a crescent or half-moon-shaped body or design
3.
a crescent-shaped fibrous cartilage between the bones at certain joints, esp at the knee
4.
a crescent-shaped lens; a concavo-convex or convexo-concave lens
n.

“crescent-shaped body,” 1690s in reference to lenses, c.1812 in reference to liquid surfaces, Modern Latin meniscus, from Greek meniskos “lunar crescent,” diminutive of mene “moon” (see moon (n.)). Related: Meniscoid.

meniscus me·nis·cus (mə-nĭs’kəs)
n. pl. me·nis·cus·es or me·nis·ci (-nĭs’ī, -kī, -kē)

me·nis’cal (-kəl) or me·nis’cate’ (-kāt’) or me·nis’coid’ (-koid’) or men’is·coi’dal (měn’ĭs-koid’l) adj.
meniscus
(mə-nĭs’kəs)

Plural menisci (mə-nĭs’ī, -kī, -kē) or meniscuses