I have subscribed to the Merriam-Webster (M-W.com) Word of the Day list for over ten years now, this is the first numismatic related word ever, so I had to share. I just love the example sentence...

quote:
The Word of the Day for March 3 is:
obverse \AHB-verss\ noun
*1 : the side of a coin or currency note bearing the chief device and lettering; broadly : a front or principal surface
2 : a counterpart having the opposite orientation or force; also : opposite
Example sentence:
The U.S. Mint has begun releasing a new series of $1 coins, each showing the name and likeness of a former U.S. president on the obverse.
Did you know?
Heads or tails? If you called heads, "obverse" is the word for you. Since the 17th century, we've been using "obverse" for the front side of coins (usually, the side depicting the head or bust of a ruler). The opposite of this sense of "obverse" is "reverse," the back or "tails" side of a coin. Since the 19th century, "obverse" has also had the extended meaning "an opposing counterpart" or "opposite." Additionally, it can be an adjective meaning "facing the observer or opponent" or "being a counterpoint or complement."
*Indicates the sense illustrated in the example sentence.
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