A peanut, also known as a groundnut, is the fruit of Arachis hypogaea, a plant in the family
Fabaceae. The peanut is classed as a grain
legume rather than as a botanical
nut, although in culinary and colloquial use it is generally treated as one. Uses of peanuts include consumption as a snack and in various dishes,
peanut butter, and – due to its high oil content – as a
vegetable oil.
Peanuts cause allergic reactions in some humans. Clockwise from top left, this photograph shows a peanut with its shell cracked open, a whole unshelled peanut, an unpeeled peanut seed, a halved peeled seed, and a whole peeled seed. This picture was
focus-stacked from 31 separate images.Photograph credit:
Ivar Leidus
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