altcoin
"litecoin is my favourite altcoin because it makes asic mining more difficulty  "namecoin is sort of an altcoin, but also a domain name system""
and alternative cryptocurrency to bitcoin
""litecoin is my favourite altcoin because it makes asic mining more difficulty  "namecoin is sort of an altcoin, but also a domain name system""" What is the definition of "altcoin"?