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Hazelnut
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hazelnuts
hazelnuts Hazelnuts are true nuts. The fruit arises from a compound ovary and does not open to release its single seed.

Hazelnut

tree and nut
Also known as: Corylus, cobnut, filbert, hazel
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Britannica Editors
Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree....
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•History

Hazelnut, (genus Corylus), genus of about 15 species of shrubs and trees in the birch family (Betulaceae) and the edible nuts they produce. The plants are native to the north temperate zone. Several species are of commercial importance for their nuts, and a number are valuable hedgerow and ornamental trees grown for their colourful autumnal foliage. An oil from the European filbert, or common hazel (Corylus avellana), is used in food products, perfumes, and soaps;...

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