A large leaf, especially of a fern or palm tree, that is often divided into many smaller leaflets.
From Latin 'frondis' meaning leaf or foliage; used specifically in botany to describe the feathery leaves of ferns and palms that look like delicate plumes.
Fern fronds are basically ancient aliens disguised as leaves—they're so alien-looking that they've been found in fossils over 300 million years old, barely changed since dinosaurs walked the earth.
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