reflex

adj. 1 (of an action) independent of the will, as an automatic response to the stimulation of a nerve. 2 (of an angle) exceeding 180. n. 1 reflex action. 2 sign or secondary manifestation (law is a reflex of public opinion). 3 reflected light or image. [latin: related to *reflect]

a. Directed back; attended by reflection; retroactive; introspective.