Nut (fruit) usage of the term is less restrictive, and many nuts (in the culinary sense), such as almonds, pecans, pistachios, walnuts, and Brazil nuts, are not nuts in a botanical sense. Common usage of the term often refers to any hard-walled, edible kernel as a nut. A nut in botany is a simple dry fruit in which the ovary wall becomes increasingly hard as it matures, and where the seed remains unattached or free within the ovary wall. Most nuts come from the pistils with "inferior" ovaries (see flower) and all are "indehiscent" (not opening at maturity). True nuts are produced,
Book of Nut Book of Nut The Book of Nut (original title: "The Fundamentals of the Course of the Stars") is a collection of ancient Egyptian astronomical texts, also covering various mythological subjects. These texts focus on the cycles of the stars of the decans, the movements of the moon, the sun and the planets, on the sundials, and related matters. This title was given to the book because of the depiction of the sky goddess Nut arching over the earth in some copies of the text. She is supported by the god of the air Shu. The Book of Nut texts include