meniscus
/mɪˈnɪskəs
/noun (plural menisci /mɪˈnɪsʌɪ/ /mɪˈnɪskʌɪ/) Physics
1The curved upper surface of a liquid in a tube.The curve of the meniscus between the fluids can be altered with currents sent through the tube, which changes the focus of the lens....
- When the water column is cut, the pressure of the water column is increased to atmospheric pressure when the meniscus is flat.
- I recall spending lengthy moments reading the meniscus on a thermometer to determine the precise temperature reading in an experiment.
1.1 [usually as modifier] A lens that is convex on one side and concave on the other: a meniscus lens...
- Petzval produced an achromatic portrait lens that was vastly superior to the simple meniscus lens then in use.
- Invented in 1876, the Mangin mirror consists of a meniscus negative lens with a mirrored convex second surface.
- It's the same with lenses; in addition, the self-centering problem is even more pronounced for meniscus shapes and other optics with long focal lengths.
1.2 Anatomy A thin fibrous cartilage between the surfaces of some joints, e.g. the knee.In January 1992, arthrography was done of the left knee, which showed according to Dr. Bernard Parent no sign of any tearing of the meniscus....
- Within a week of having 85 per cent of his meniscus removed, he was running, and three days later he was back playing for the Swans.
- He had a torn meniscus, which is the same thing, it's a torn muscle.
Derivatives
meniscoid
Origin
Late 17th century: modern Latin, from Greek mēniskos 'crescent', diminutive of mēnē 'moon'.