The Collaborative International Dictionary of English v.0.48:

Prandial \Pran"di*al\, a. [L. prandium a repast.]
   Of or pertaining to a repast, especially to dinner.
   [1913 Webster]

WordNet (r) 3.0 (2006):

prandial
    adj 1: of or relating to a meal

Moby Thesaurus II by Grady Ward, 1.0:

36 Moby Thesaurus words for "prandial":
   cannibal, cannibalistic, carnivorous, commensal, dietetic, dining,
   eating, feeding, flesh-eating, fruitarian, gastronomic, gluttonous,
   grain-eating, graminivorous, granivorous, grass-eating,
   herbivorous, insect-eating, insectivorous, lactovegetarian,
   man-eating, meat-eating, mensal, nourishing, nutritious,
   omnivorous, omophagous, pantophagous, phytivorous, phytophagous,
   plant-eating, postprandial, predacious, preprandial,
   vegetable-eating, vegetarian