me·nis·cus (mə-nĭs'kəs)
 (click for larger image in new window) n.
pl. me·nis·ci (-nĭs'ī, -kī, -kē) or me·nis·cus·es
A crescent-shaped body. A concavo-convex lens. The curved upper surface of a nonturbulent liquid in a container that is concave if the liquid wets the container walls and convex if it does not. A cartilage disk that acts as a cushion between the ends of bones that meet in a joint.
[New Latin, from Greek mēniskos, diminutive of mēnē, moon, month; see mē-2 in Indo-European roots.] me·nis'cal (-kəl), me·nis'cate' (-kāt'), me·nis'coid' (-koid'), men'is·coi'dal (měn'ĭs-koid'l) adj. |