The term MEAL PRECEDER can be solved with the three letter word OAT. Oats are a type of cereal grain that is widely consumed as a breakfast food. It is often served as oatmeal, which is made by boiling oats in water or milk. Oats are also used in a variety of other dishes, such as granola and muesli. Oats are a popular choice for a MEAL preceder because they are high in fiber and provide a good source of energy.