palmate

Etymology

From Latin palmātus (“hand-shaped”), by extension (as palma acquired the meaning "palm tree"), "palm-leaf shaped".

adj

1. (chiefly botany) Having three or more lobes or veins arising from a common point.
   Although palmate leaves are typical of most Western maples, a number of species have leaves without lobes.
2. (botany) (leaves) Having more than three leaflets arising from a common point, often in the form of a fan.
   The horse chestnut, buckeye and hickory trees have palmate leaves. That is, the broad oval leaflets are all set around the tip of a common leaf stem, spreading in a circle, like the ribs of a palm leaf fan. 1909, Eleanor Stockhouse Atkinson, “In the Tree Tops”, in The How and Why Library
3. (rare) Having webbed appendage; palmated.
   The Palmate Newt is a common Western European amphibian.
4. (rare) Hand-like; shaped like a hand with extended fingers

noun

1. (chemistry) A salt or ester of ricinoleic acid (formerly called palmic acid); a ricinoleate.