I've always preferred the honorific "multilingual speaker" to "polyglot" since it sounds a whole lot nicer, but according to definition if a person "learns multiple languages as an avocation" they're a polyglot.
And when a polyglot comes across another language enthusiast in the wild their conversation sounds like a trip around the world.
In this video Dutch artist and polyglot Wouter Corduwener chats with a Macedonian hyperpolyglot named Zoran Radiceski, who speaks a staggering 35 different languages, in a conversation only a fellow polyglot could follow!
-Via Digg