synostosis

[sin-o-stoh-sis]

noun

Anatomy.

plural

synostoses 

1. union of separate bones into a single bone.

Other Word Forms

• synostotic adjective
• synostotical adjective
• synostotically adverb

Word History and Origins

Origin of synostosis¹

From New Latin, dating back to 1840–50; syn-, ostosis

Example Sentences

Archie's condition - known as Sagittal Synostosis - means that as his brain grows, the skull cannot grow sideways to accommodate it.

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Aist was born with congenital radioulnar synostosis, a condition leading to the abnormal connection of the bones in the forearm, the radius and ulna, according to the National Institutes of Health.

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Matthew was born with a rare cranial birth defect called metopic synostosis, a condition that affects one in 15,000 babies, according to data from Boston Children’s Hospital.

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His metopic synostosis caused a premature hardening of his cranial sutures, the joints between the seven cranial bones.

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Metopic synostosis is a type of craniosynostosis, a deformity found in infants that changes the growth pattern in their skull.

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