Dictionary.com
definitions

spondylosis

[spon-dl-oh-sis]
noun Pathology.
  1. immobility and fusion of vertebral joints.

Origin of spondylosis

1895–1900; < Greek spóndyl(os) vertebra + -osis
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for spondylosis

spondylosis

noun
  1. fusion of the vertebrae

Word Origin for spondylosis

C20: from New Latin, from Greek spondulos vertebra; see -osis
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
Word Origin and History for spondylosis

from Greek spondylos, variant of sphondylos "vertebra" + -osis.

Online Etymology Dictionary, © 2010 Douglas Harper
spondylosis in Medicine

spondylosis

[spŏn′dl-ō′sĭs]
n.
  1. Ankylosis of the vertebral bones.
  2. A degenerative disease of the spinal column, especially one leading to fusion and immobilization of the vertebral bones.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.