"inflammation of the vertebrae," 1837, Modern Latin, from Latin spondylus, from Greek spondylos (see spondylo-) + -itis "inflammation."
Entries linking to spondylitis
spondylo-
before vowels spondyl-, combining form meaning "vertebrae," from Greek spondylos "a vertebra," in plural "the backbone," variant of sphondylos, of uncertain origin.
-itis
word-forming element in medicine denoting "diseases characterized by inflammation" (of the specified part), Modern Latin, from Greek -itis, feminine of adjectival suffix -ites "pertaining to." Feminine because it was used with an implied nosos "disease," a feminine noun; especially in arthritis (nosos) "(disease) of the joints." Arthritis (16c.) was one of the earliest appearances of the suffix in English and from it the suffix was abstracted in other uses.