| 单词 | meniscus |
| 释义 | meniscus (once / 27171 pages) 1n 2n 3n The next time you pour some fluid into a tube, look at it from the side. You will see the liquid has a slight curve, either up or down. This curved surface, created by air pressure, is called a meniscus. The Greeks had a word for the lunar crescent, mēniskos, which itself came from the word for the moon, mḗnē. In the late 17th Century, the word meniscus was given to similarly-curved lenses. Then in 1812, the curved surfaces of liquid were referred to by this word as well. Later, the name was also applied to a crescent-shaped cartilage at the knee, between the tibia and the femur. These small, semi-lunar bits are important for reducing friction during leg movement. WORD FAMILYmeniscus: menisci USAGE EXAMPLESFrom age 23 to 41, I ran 2 to 3 miles every single morning, until torn menisci and arthritis hobbled my knees. New York Times(Oct 18, 2016) After missing 11 games with a torn meniscus, Minnesota Vikings running back Adrian Peterson was able to return against the Indianapolis Colts. Washington Times(Dec 23, 2016) Anderson, who tore his left meniscus on Oct. Washington Times(Dec 21, 2016) 1 n (optics) a lens that is concave on one side and convex on the other 2Hyper lens, lens system, lense a transparent optical device used to converge or diverge transmitted light and to form images n (physics) the curved upper surface of a nonturbulent liquid in a vertical tube 3Hyper surface the outer boundary of an artifact or a material layer constituting or resembling such a boundary n (anatomy) a disk of cartilage that serves as a cushion between the ends of bones that meet at a joint Syn|Hyper semilunar cartilage cartilage, gristle tough elastic tissue; mostly converted to bone in adults |
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