| MEC | median effective concentration; middle ear canal; middle ear cell; minimum effective concentration |
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| MED | median erythrocyte diameter; medical, medication, medicine; Medical Entities Dictionary; minimum eff... |
| med | medial; median; medication; medicine, medical; medium |
| MLD | manual lymph drainage; median lethal dose; metachromatic leukodystrophy; minimal lesion disease; min... |
| MLD50 | median lethal dose |
| cochlear joint | A variety of hinge joint in which the elevation and depression, respectively, on the opposing articular surfaces form part of a spiral, flexion being then accompanied by a certain amount of lateral deviation. Synonym: screw joint, spiral joint. (05 Mar 2000) |
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| coffin joint | <anatomy, veterinary> The distal interphalangeal articulation of the horse, a compound synovial joint between the middle and distal phalanges and also with the distal sesamoid or navicular bone on the caudal side. (05 Mar 2000) |
| wedge-and-groove joint | A form of fibrous joint in which the sharp edge of one bone is received in a cleft in the edge of the other, as in the articulation of the vomer with the rostrum of the sphenoid. Synonym: schindylesis, schindyletic joint, wedge-and-groove suture. (05 Mar 2000) |
| pisotriquetral joint | The synovial joint between the pisiform and triquetrum; it is separate from the other intercarpal joints. Synonym: articulatio ossis pisiformis, articulation of pisiform bone. (05 Mar 2000) |
| pivot joint | A synovial joint in which a section of a cylinder of one bone fits into a corresponding cavity on the other, as in the proximal radioulnar joint. Synonym: articulatio trochoidea, helicoid ginglymus, lateral ginglymus, rotary joint, rotatory joint, trochoid articulation, trochoid joint. (05 Mar 2000) |
| mortise joint | The joint that is formed by the inferior articular and malleolar articular surfaces of the tibia, the malleolar articular surface of the fibula, and the medial malleolar, lateral malleolar, and superior surfaces of the talus. (12 Dec 1998) |
| plane joint | A synovial joint in which the opposing surfaces are nearly planes and in which there is only a slight, gliding motion, as in the intermetacarpal joints. Synonym: articulatio plana, arthrodia, arthrodial articulation, arthrodial joint, gliding joint. (05 Mar 2000) |
| movable joint | A joint in which the opposing bony surfaces are covered with a layer of hyaline cartilage or fibrocartilage, there is a joint cavity containing synovial fluid, lined with synovial membrane and reinforced by a fibrous capsule and ligaments, and there is some degree of free movement possible. Synonym: articulatio synovialis, diarthrodial joint, diarthrosis, junctura synovialis, movable joint, perarticulation. (05 Mar 2000) |
| composite joint | A joint composed of three or more skeletal elements, or in which two anatomically separate joints function as a unit. For example, the telonavicular and calcaneocuboid joints act together as the compound transverse tarsal joint. Synonym: articulatio complexa, articulatio composita, composite joint, compound articulation. (05 Mar 2000) |
| compound joint | A joint composed of three or more skeletal elements, or in which two anatomically separate joints function as a unit. For example, the telonavicular and calcaneocuboid joints act together as the compound transverse tarsal joint. Synonym: articulatio complexa, articulatio composita, composite joint, compound articulation. (05 Mar 2000) |
| condylar joint | A modified ball-and-socket synovial joint in which the joint surfaces are elongated or ellipsoidal; it is a biaxial joint, i.e., two axes of motion at right angles to each other, the radiocarpal being an example. Synonym: articulatio ellipsoidea, articulatio condylaris, condylar articulation, condylar joint. (05 Mar 2000) |
| multiaxial joint | One in which movement occurs in a number of axes. See: ball-and-socket joint. Synonym: polyaxial joint. (05 Mar 2000) |
| wrist joint | The synovial joint between the distal end of the radius and its articular disk and the proximal row of carpal bones with the exception of the pisiform bone. Synonym: articulatio radiocarpea, carpal articulation, carpal joints, radiocarpal articulation, radiocarpal joint. (05 Mar 2000) |
| polyaxial joint | One in which movement occurs in a number of axes. See: ball-and-socket joint. Synonym: polyaxial joint. (05 Mar 2000) |
| costochondral joint | The cartilaginous joint between the sternal end of a rib and the lateral end of a costal cartilage. Synonym: articulatio costochondralis, costochondral junction. (05 Mar 2000) |