Incretin (417524005) Definition insulinotropic peptides released by the gastrointestinal tract in response to food; stimulates insulin secretion and inhibits glucagon secretion. [from CRISP]
In simple terms, racism is the belief that distinct human races exist and that one race is superior to another. This definition is generally agreed by the Oxford English Dictionary, Merriam-Webster Dictionary (USA) and the Macquarie Dictionary (Australia).
Racism, in it's most frequently used term, is created when people dislike a certain characteristic attributed to a significant amount of individuals of a certain race, yet, would dislike the *race* itself and not just the individuals possessing subjected characteristic.