zygapophysis

One of two usually paired processes of the neural arch of a vertebra that articulates with corresponding parts of adjacent vertebrae.

A process upon the neural arch of a vertebra corresponding to that called oblique or articular in human anatomy, provided with a facet for articulation with the same process of a preceding or succeeding vertebra, thus serving to interlock the series of vertebral arches.

One of the articular processes of a vertebra, of which there are usually four, two anterior and two posterior. See under vertebra.

One of the articular processes of a vertebra, of which there are usually four, two superior and two inferior.