Definitions

1. adjective

having the form of a leaf or other organ that is folded like a leaf, especially a fold of skin or a part of a plant that is folded together like a leaf

“The pliciform nature of the embryo’s structure is essential for its proper development.”

2. noun

a part of an organ, especially the lungs or the brain, that is folded like a leaf

“The pliciform structures in the lungs help increase their surface area for gas exchange.”