An immovable or nearly immovable union of rigid components of the skeletal system, including fibrous joints, cartilaginous joints, and bony unions (synostoses). See articulation. [G. fr. syn, together, + arthrosis, articulation]
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syn·ar·thro·sis -'thrō-səs n, pl -thro·ses -.sēz an immovable articulation in which the bones are united by intervening fibrous connective tissues
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n.
an immovable joint in which the bones are united by fibrous tissue. Examples are the cranial suture. See also gomphosis, schindylesis.
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syn·ar·thro·sis (sin″ahr-throґsis) pl. synarthroґses [syn- + arthrosis] [TA] a bony junction that is immovable and is connected by solid connective tissue; the two types are the fibrous joint (junctura fibrosa) and the cartilaginous joint (junctura cartilaginea). synarthrodial adjMedical dictionary. 2011.