MENISCUS

meniscus

(noun) (physics) the curved upper surface of a nonturbulent liquid in a vertical tube

meniscus

(noun) (optics) a lens that is concave on one side and convex on the other

meniscus, semilunar cartilage

(noun) (anatomy) a disk of cartilage that serves as a cushion between the ends of bones that meet at a joint

Source: WordNet® 3.1


Etymology

Noun

meniscus (plural meniscuses or menisci)

A crescent moon, or an object shaped like it. [from 17th c.]

(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.]

Source: Wiktionary


Me*nis"cus, n.; pl. L. Menisci (-si), E. Meniscuses. Etym: [NL., from Gr. mh`nh the moon.]

1. A crescent.

2. (Opt.)

Definition: A lens convex on one side and concave on the other.

3. (Anat.)

Definition: An interarticular synovial cartilage or membrane; esp., one of the intervertebral synovial disks in some parts of the vertebral column of birds. Converging meniscus, Diverging meniscus. See Lens.

Source: Webster’s Unabridged Dictionary 1913 Edition



RESET




Word of the Day

17 June 2025

RECREANT

(adjective) having deserted a cause or principle; “some provinces had proved recreant”; “renegade supporters of the usurper”


coffee icon

Coffee Trivia

In 1511, leaders in Mecca believed coffee stimulated radical thinking and outlawed the drink. In 1524, the leaders overturned that order, and people could drink coffee again.

coffee icon