A Polygon with an imaginary number of sides. An Imaginary number is the square root of a negative number, so an imagigon has a negative surface area. Warning - trying to visualise this will cause your brain to implode.
A word that's not in the dictionary, but totally made up by some random guy's crazy imagination so maybe, just maybe he's word will get in the "urbandictionaryword of the day".
Dude1 : Dude, those "word of the day" words I get in my mail are so fecking funny...
Dude2 : Yeah I know dude!
Dude1 : I'm gonna make up my own word and submit it, maybe it's getting in the "word of the day"!
Dude2 : Dude, you'r going to make up an imagiword?
Imagion is the most beautifulgorgeous girl you will ever encounter. She has beautiful curly brown hair with sparkling brown eyes. Although she hates when people bring up her age. She is very wise and open minded. She is very shy at first but when you get to know her she’s a lot more exciting and outgoing.