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spondylosis

American  
[spon-dl-oh-sis] / ˌspɒn dlˈoʊ sɪs /

noun

Pathology.
  1. immobility and fusion of vertebral joints.


spondylosis British  
/ ˌspɒndɪˈləʊsɪs /

noun

  1. fusion of the vertebrae

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of spondylosis

1895–1900; < Greek spóndyl ( os ) vertebra + -osis