The coin community forum features a Numismatic Glossary that describes acronyms and word definitions. Some words automatically light up blue and will teleport you to the definitions page if you click on it.
Since I am using my phone, and hunting through the website is a bit confusing on a small screen, I just searched "coin community numismatic glossary" on my browser and it was the first link listed.
Suffering from bust half fever.
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