epineural adjective 2noun 1forms 1 adjective2 •Related to or situated upon a nerve or nerve structure, especially on the epineurium.Additional one to two epineural stiches are placed between the holding stiches after completion of the fascicular repairs. — 1986 •Arising from or associated with the neurapophysis of a vertebraThus it is clear that these investigators regarded the hyponeural canal as being connected with the anterior part of what we now know to be the radial epineural canal and the epineural ring canal. — 1896 noun1 •An epineural bone formsepineurals