A frond is the large, divided leaf of a fern or palm tree. Unlike simple leaves with smooth edges, fronds usually split into many smaller sections that spread out from a central stem, creating a feathery or fan-like appearance.

If you've seen a fern growing in a shady garden or forest, those graceful, curving green structures are fronds. Each frond might have dozens of tiny leaflets arranged along both sides of the stem, like a green feather. Palm trees have fronds too, though theirs look quite different: some spread out like giant fans, while others have long, pointed sections that arch outward.

The word frond specifically describes these complex, divided leaves. You wouldn't call an oak leaf or a maple leaf a frond because those leaves grow as single pieces. Fronds are nature's way of creating a lot of leaf surface area in an elegant, organized pattern. When you walk through a tropical garden and see those sweeping palm fronds overhead, or brush past delicate fern fronds on a forest path, you're seeing one of the oldest leaf designs in the plant world.