a. Anat. [mod. f. AMPHI- + Gr. ἀμθρώδ-ης well-articulated + -IAL.] Characterized by amphiarthrosis.
1859. Todd, Cycl. Anat. & Phys., V. 121/2. The sacrum is united to the last lumbar vertebra by an amphi-arthrodial joint.
1879. Morris, Anat. Joints, 5. Connecting fibro-cartilages occur only in amphiarthrodial joints.