What is "bullate"

Bullate \Bul"late\ (b[u^]l"l[asl]t/), a. [L. bullatus, fr. bulla bubble.] (Biol.) Appearing as if blistered; inflated; puckered.

Bullate leaf (Bot.), a leaf, the membranous part of which rises between the veins puckered elevations convex on one side and concave on the other.

a. 1 (context medical English) Resembling a bulla or blister; inflated; blistered; bulliform. 2 (context medical English) Of bacterial cultures, having a a growth which is blistered; rising in convex prominences.

adj. of leaves; appearing puckered as if blistered