IPA: //ˌpoʊstˈeɪ.ʃəl//
KK: /ˈpoʊstˌæks.i.əl/
Referring to a position behind a central line or axis in the body, especially in relation to limbs.
The postaxial side of the forelimb is important for understanding limb development.
Postaxial → It is formed from "post-" (meaning after) and "axial" (from Latin "axis", meaning axis or central line). The word "postaxial" refers to something located behind or after the axis of a structure.
Think of something that is positioned 'after' ('post-') the 'central line' ('axial') — that's what postaxial means.