Anat. [mod. f. AMPHI- of both kinds + ARTHROSIS ‘articulation,’ repr. a possible Gr. *ἄρθρωσις, n. of action f. ἀρθρύειν to articulate.] A form of jointing partaking of the characters both of diarthrosis and synarthrosis, the two bones being united by a cartilage of some elasticity, which prevents one surface sliding on the other, but admits of a certain amount of movement; as in the joints of the vertebral column, the carpus, etc.
1836. Todd, Cycl. Anat. & Phys., I. 255/1. The amphiarthrosis possesses a manifest, although certainly a very limited degree of motion.
1874. Roosa, Dis. Ear, 202. The articulation between the short process of the incus and the posterior tympanic wall is an amphiarthrosis.
