post-ˈaxiad,adv. (prep.)Anat. [f. as next + -ad: cf. dextrad.] In a post-axial direction (from). 1895Proc.Zool.Soc. 331 These two grooves are separated by a..ridge (narrowing postaxiad).Ibid. 373 The quadrate continues onwards postaxiad the dorsal margin of the zygoma.