obversion
ஒன்றைநோக்கி மற்றொன்றைத திருப்புதல், (அள) உய்ப்பெதிர் மறை,நிகரான மறுகூறு வருவிக்கும் உடனடியான அனுமான முறை.
Ob*ver"sion, n. Etym: [L. obversio a turning towards.] 1. The act of turning toward or downward. 2. (Logic) Defn: The act of immediate inference, by which we deny the opposite of anything which has been affirmed; as, all men are mortal; then, by obversion, no men are immortal. This is also described as "immediate inference by privative conception." Bain.