Bul'late (bŭl'lat/) adjective [ Latin bullatus , from bulla bubble.] (Biol.) Appearing as if blistered; inflated; puckered. Bullate leaf (Botany) , a leaf, the membranous part of which rises between the veins puckered elevations convex on one side and con... Found on http://www.encyclo.co.uk/webster/B/111