synarthrosis

 
Pronunciation: /ˌsɪnɑːˈθrəʊsɪs/

noun (plural synarthroses /-siːz/)

Anatomy
  • an immovably fixed joint between bones connected by fibrous tissue (for example, the sutures of the skull).

Origin:

late 16th century: from modern Latin, from Greek sunarthrōsis, from sun- 'together' + arthrōsis 'jointing' (from arthron 'joint')