obverse

noun

1. the side of a coin, medal, flag, etc., that bears the principal design (opposed to reverse).
2. the front or principal surface of anything.
3. a counterpart.
4. Logic. a proposition obtained from another by obversion.

adjective

5. facing the observer.
6. corresponding to something else as a counterpart.
7. having the base narrower than the top, as a leaf.

adjective

1. facing or turned towards the observer
2. forming or serving as a counterpart
3. (of certain plant leaves) narrower at the base than at the top

noun

4. a counterpart or complement
5. the side of a coin that bears the main design or deviceCompare reverse (def. 15)
6. logic a categorial proposition derived from another by replacing the original predicate by its negation and changing the proposition from affirmative to negative or vice versa, as no sum is correct from every sum is incorrect

adj.“turned toward the observer, frontal,” 1650s, from Latin obversus “turned against, directed toward,” past participle of obvertere “to turn toward or against,” from ob “toward” (see ob-) + vertere “to turn” (see versus). According to OED, not in common use until the end of the 18th century. The noun, in reference to coins, medals, etc. (opposite of reverse), is attested from 1650s. Related: Obversely.