/zoʊˈnuːlə/ (zo-NOO-luh)

Definitions

1. noun

A type of adherens junction found in adherent cells, particularly in muscle cells where it helps anchor the cytoskeleton to the cell membrane.

“The researchers studied the zonula in muscle cells to better understand cell adhesion mechanisms.”

2. noun

A small notch or groove, especially in a leaf or a petal.

“The zonula on the leaf helped it fold up tightly during the dry season.”