From the Urban Dictionary:
A person who supplements an otherwise normal diet with large amounts of pork!
They eat LARGE amounts of bacon or pork, in seemingly obscene amounts.
Bubba eats bacon for breakfast lunch and dinner. He is a bacontarian.
A person who claims to be a true vegetarian but knowingly supplements their diet with small amounts of bacon, bacon bits, and bacon fat.
My friend Sagar, a true Bacontarian, claims to be a true vegetarian but also eats meals where bacon is added.