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noun

Meniscus n. (pl. L. menisci, E. meniscuses)

A crescent.

(Opt.) A lens convex on one side and concave on the other.

(Anat.) 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.

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Etymology of 'Meniscus'

Collaborative International Dictionary of English 0.48

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"Meniscus" Quotes from Famous Books

... the measuring tube; when the mercury has reached this point, thin boards and card-boards are added till a suitable pressure is obtained. The length of the inclosed cylinder of air is then measured with the cathetometer, also the height of the mercurial "meniscus," and the difference of the heights of the mercurial columns in A and B, figure 4. To obtain a second measure an assistant removes some of the boxes and the cylinder is lowered by hand three or four centimeters and then replaced in its original ...

— Scientific American Supplement, No. 303 - October 22, 1881 • Various

... a double-convex lens, Fig. 6 a double-concave, and Fig. 7 a concavo-convex or meniscus. By these it is seen that a double-convex lens tends to condense the rays of light to a focus, a double-concave to scatter them, and a ...

— American Handbook of the Daguerrotype • Samuel D. Humphrey