look up any word, like lemonparty:
 
1.
little microrgansims that cause infection and diseases
bacteria kill by the millions
by PlayDohMan May 11, 2004
 
2.
the backdoor of a cafeteria
I went out the bacteria.
by Jill and Sarah February 10, 2007
 
3.
Bacterium is a bi-gendered creature, most often found in zombies. It is most often pink, but oftentimes green.
"Dude, I can't tell whether thats a girl or a boy!"
"Yep, thats a total bacterium..."
by FelixPhoenix October 14, 2006