[syn.ar.thro.sis] n, pl -thro.ses [Gk synarthrosis, fr. syn- + arthrosis arthrosis] (1578): an immovable articulation in which the bones are united by intervening fibrous connective tissues
SYNARTHROSIS
Meaning of SYNARTHROSIS in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012