I don't know about all of them, but some good resources are: http://www.usrarecoin.com/wv04.html http://www.pinnacle-rarities.com/Glossary.aspx http://www.coincommunity.com/dictionary/ http://www.coin-gallery.com/cgglossary.htm http://www.numismedia.com/glossary.htm http://www.pcgs.com/lingo.chtml http://www.coinworld.com/newcollector/glossary.aspx http://www.telecoins.com/gloss.html There. That oughta do it
Most of the links in this thread are dead, here are the still functioning links as of October 2024: https://www.numismedia.com/helpcenter/glossaryac.shtml https://www.coincommunity.com/dictionary/ https://en.wikipedia.org/wiki/Glossary_of_numismatics https://www.ngccoin.com/news/article/2202/Glossary/ https://www.usmint.gov/learn/collecting-basics/glossary https://westminstermint.com/blogs/guides/coin-collecting-terms-and-definitions https://coinappraiser.com/rare-coin-knowledge-center/coins-com-glossary-terms/ https://coins.ha.com/c/ref/glossary.zx https://www.pcgs.com/glossary/ https://stacksbowers.com/auctions/glossary/ https://www.silvertowne.com/topic/glossary https://www.royalmint.com/discover/coin-collecting/coin-collecting-glossary/ https://rosen-co.com/inswords/glossary/coin.htm https://www.americanmint.com/coin-collecting-terminology I will be working to compile a CoinTalk Glossary. I have formerly compiled coin related Acronyms, but I want a non-acronym glossary collecting as many numismatic related words as possible so we don't have to clink on any of these off-site links, many of which will likely disappear in coming years. I will of course cite any sites I get information from and also will ask for contributions from members. Stay tuned...