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 long period of time going back before the time of Seti I. The astronomical data included in the decan list below the body of Nut point to the 12th dynasty, the time of Sesostris III. There are two different decan lists that cannot be reconciled, so one of them must be secondary. According to von Lieven, the Middle Kingdom data is secondary, and she suggests that the earlier list goes back to the Old Kingdom. 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,