Final answer:
The correct suffix for a term pertaining to a meal is -PRANDIAL. This suffix indicates a relation to meals and is used in terms like 'postprandial' for after a meal and 'preprandial' for before a meal.
Step-by-step explanation:
The suffix that would be used in a term pertaining to a meal is -PRANDIAL. This suffix is derived from the Latin word 'prandium' meaning meal, and it is commonly used in medical terms to indicate a relation to meals.
For example, the term postprandial refers to the period after eating a meal, whereas preprandial pertains to the period before a meal. Understanding these suffixes can be useful in various medical contexts, such as discussing blood sugar levels in terms of preprandial (before a meal) and postprandial (after a meal) states.