\Syn`ar*thro"sis\, n.; pl. {Synarthroses}. [NL.,
fr. Gr. ? a being jointed together, fr. ? to link or joint
together; sy`n with + ? a joint.] (Anat.)
Immovable articulation by close union, as in sutures. It
sometimes includes symphysial articulations also. See the
Note under {Articulation}, n., 1.