intertragic notch intertragic notch the intertragic notch is an anatomical feature of the ears of mammals. in humans, it is the space that separates the tragus from the antitragus in the outer ear. intertragic notchthe auricula. lateral surface.detailspart ofearidentifiersta98a15.3.01.019ta2193fma61175anatomical terminology it is the point specified (although not by that name) in the u.s. army’s regulation governing the length of sideburns in male soldiers.