the term 'spondylitis' is a modern medical neologism constructed directly from greek components to describe a specific pathological condition. the root 'spondylos' in ancient greek referred literally to a vertebra, a usage that has remained remarkably stable in anatomical terminology. the suffix '-itis', also from greek, was historically used to form adjectives from nouns, but in modern medical latin it was repurposed to denote diseases characterized by inflammation. thus, the word's logic is transparently literal, combining 'vertebra' with 'inflammation' to precisely name an inflammatory disease affecting the spinal joints.

Structure: spondyl (vertebra) + itis (inflammation) spondyl (from greek 'spondylos', meaning vertebra, serving as the root noun); itis (from greek '-ītis', a suffix forming nouns denoting inflammation or disease, serving as a suffix).