Anat. Pl. -oses. [mod.L., a. late Gr. συγχόνδρωσις, f. σύν SYN- + χόνδρος cartilage: see -OSIS.] The junction of two bones by cartilage; the structure or part in which this takes place; a cartilaginous articulation or symphysis; spec. the sacro-iliac synchondrosis or articulation of the sacrum with the ilium.
1615. Crooke, Body of Man, 345. A new Synchondrosis or articulation by the mediation of a Cartilage cannot be made.
1732. A. Monro, Anat. Bones (ed. 2), 159. On the Chin externally, a transverse Ridge appears in the Middle;… the two Parts, of which this Bone then consists, are joined … in Children by Synchondrosis.
1831. R. Knox, Cloquet’s Anat., 169. The articulations in which cartilages are employed to keep the bones together are called Synchondroses.
1835–6. Todd’s Cycl. Anat., I. 249/1. In the sacro-iliac symphysis, or synchondrosis.
1875. Huxley, in Encycl. Brit., I. 753/1. The suspensorium … being, as a general rule, united with some part of the wall of the skull by synchondrosis.
Hence Synchondrosial a., of, pertaining to, or constituting a synchondrosis; Synchondrosially adv., in the manner of a synchondrosis. So Synchondrotomy Surg. [-TOMY], the operation of cutting through a synchondrosis, esp. the symphysis pubis (SYMPHYSIOTOMY).
1866. Huxley, Laing’s Preh. Rem. Caithn., 101. Pelves put together without their *synchondrosial cartilages and interpubic ligaments.
1888. Hulke, in Proc. Zool. Soc., 419. A rough synchondrosial impression.
1902. Proc. Zool. Soc., 4 Nov., 291. The pterygials being immovably attached to the scapula and coracoid, either directly or *synchondrosially.
1848. Dunglison, Med. Lex. (ed. 7), *Synchondrotomy.
