synchondrosis
Concise Oxford English Dictionary © 2008 Oxford University Press:
synchondrosis /ˌsɪŋkɒnˈdrəʊsɪs/
▶noun (pl. synchondroses /-siːz/) Anatomy an almost immovable joint between bones bound by a layer of cartilage, as in the spinal vertebrae.
– origin C16: from mod. L., from Gk sunkhondrōsis, from sun- ‘together’ + khondros ‘cartilage’.
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