zyg·a·poph·y·sis 
(zĭg′ə-pŏfĭ-sĭs, zī′gə-)
(zĭg′ə-pŏfĭ-sĭs, zī′gə-)n. pl. zyg·a·poph·y·ses (-sēz′)
One of two usually paired processes of the neural arch of a vertebra that articulates with corresponding parts of adjacent vertebrae.
zyg′ap·o·physe·al, zyg′ap·o·physi·al (zĭg′ăp-ə-fĭzē-əl, zī′găp-) adj.