OBVERSE

I. adjective see: ob- Date: circa 1656 facing the observer or opponent, having the base narrower than the top , constituting the ~ of something ; opposite , ~ly adverb II. noun Date: 1658 the side of a coin or currency note bearing the chief device and lettering, a counterpart having the opposite orientation or force , a proposition inferred immediately from another by denying the opposite of what the given proposition affirms