metakinetic
/ˌmɛtəkɪˈnɛtɪk/ /ˌmɛtəkʌɪˈnɛtɪk/adjective
Biology. Designating, relating to, or possessing a movable joint in the posterior portion of the skull (as between the brain case and skull roof).
Origin
Late 19th century (in an earlier sense). From meta- + kinetic.