WordReference Random House Unabridged Dictionary of American English © 2025
am•phi•ar•thro•sis
(am′fē är thrō′sis),USA pronunciation n., pl. -ses (-sēz).USA pronunciation [Anat.]
am′phi•ar•thro′di•al, adj.
- Anatomya joint permitting only slight motion, as that between the vertebrae.
- amphi- + Greek árthrōsis articulation. See arthro-, -osis 1830–40