enarthrosis

 
Pronunciation: /ˌɛnɑːˈθrəʊsɪs/

noun (plural enarthroses /-siːz/)

Anatomy
  • a ball-and-socket joint.

Origin:

late 16th century: from Greek enarthrōsis, from enarthros 'jointed', from en- 'inside' + arthron 'joint'