the world > plants > part of plant > part defined by form or function > [adjective] > folded, pleated, or wavy (4)
Chiefly Biology and Medicine. Having folds or ridges; = plicate, adj.
Folded, pleated; having parallel folds or ridges.
Botany and Zoology. = undulated, adj. 1.
Folded and waved, marked with wavy lines.