A person or animal who primarily or exclusively eats or prefers to eat carbohydrates (sugary and/or starchy and or heavily cellulose laden foods) as their primary diet source.
"When planning food for a party buffet, one has to be sure to include a variety of dishes that will appeal to all types of eaters, including carnivores, vegetarians, and even carbohydratarians."
by Eric Raynor October 26, 2006