[TA] (1) A form of fibrous joint in which a peglike process fits into a hole, as the root of a tooth into the socket in the alveolus. (2) The hollow part of a joint; the excavation in one bone of a joint that receives the articular end of the other bone. SYN: socket (1)*, peg-and-socket articulation, peg-and-socket joint. [G. gomphos, bolt, nail, + -osis, condition]
