- one of the four processes of a vertebra, occurring in pairs that interlock each vertebra with the vertebrae above and below.
Origin of zygapophysis
1850–55; zyg- + apophysis
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- anatomy zoology one of several processes on a vertebra that articulates with the corresponding process on an adjacent vertebra
Word Origin for zygapophysis
C19: from zygo- + apophysis
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