n, pl  me*nis*ci  also  me*nis*cus*es  1  :  a crescent or crescent-shaped body  2  :  a fibrous cartilage within a joint:  a  :  either of two crescent-shaped lamellae of fibrocartilage that border and partly cover the articulating surfaces of the tibia and femur at the knee  :  SEMILUNAR CARTILAGE: (1) :  one mostly between the lateral condyles of the tibia and femur - called also external semilunar fibrocartilage , lateral meniscus , lateral semilunar cartilage  (2) :  one mostly between the medial condyles of the tibia and femur - called also internal semilunar fibrocartilage , medial meniscus , medial semilunar cartilage   b  :  a thin oval ligament of the temporomandibular joint that is situated between the condyle of the mandible and the mandibular fossa and separates the joint into two cavities  3  :  a concavo-convex lens  4  :  the curved upper surface of a liquid column that is concave when the containing walls are wetted by the liquid and convex when not .
 
 
 
Similar sounding terms:  mono·zy·gous 
 
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