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[sin-o-stoh-sis] /ˌsɪn ɒˈstoʊ sɪs/
noun, plural synostoses
[sin-o-stoh-seez] /ˌsɪn ɒˈstoʊ siz/ (Show IPA).
union of separate bones into a single bone.
Origin of synostosis
From New Latin, dating back to 1840-50; See origin at syn-, ostosis
Related forms
[sin-o-stot-ik] /ˌsɪn ɒˈstɒt ɪk/ (Show IPA),
synostotical, adjective
synostotically, adverb Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for synostosis
Historical Examples
  • Pachycephaly (thickness of head) is due to synostosis of the parietal bone with the occipital.

    Degeneracy Eugene S. Talbot
  • As a result, osseous solidification of the joint (synostosis) ensues without, of course, the possibility of any movement.

  • Simple dolichocephaly is due to synostosis of the sagittal, or antero-posterior suture of the skull.

    Degeneracy Eugene S. Talbot
  • Tapeisocephaly (low head) is due to synostosis of the great wings of the sphenoid with the frontal.

    Degeneracy Eugene S. Talbot
  • This process of synostosis begins from the interior of the cranium, and only subsequently manifests itself externally.

    Pedagogical Anthropology Maria Montessori
synostosis in Medicine

synostosis syn·os·to·sis (sĭn'ŏ-stō'sĭs)
n. pl. syn·os·to·ses (-sēz)
Fusion of normally separate bones. Also called bony ankylosis, true ankylosis.

syn'os·tot'ic (-tŏt'ĭk) adj.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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