Carnism is the belief system in which eating certain animals is considered ethical and appropriate. Carnists—people who eat meat—are not the same as carnivores. Carnivores are animals that are dependent on meat to survive. … Carnists eat meat not because they need to, but because they choose to, and choices always stem from beliefs. Carnism's invisibility accounts for why choices appear not to be choices at all.
p. 30 - Why We Love Dogs, Eat Pigs, and Wear Cows (2010)