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A semilunar valve is a type of heart valve that has half-moon like flaps or cusps. It prevents the backflow of blood from the arteries to the ventricles of the heart during diastole. There are two semilunar valves in the heart, the aortic valve and the pulmonary valve. The aortic valve regulates blood flow from the left ventricle to the aorta, and the pulmonary valve controls blood flow from the right ventricle to the pulmonary artery.

Barbeque, often abbreviated as BBQ, generally refers to a cooking method that involves grilling, smoking, braising, or roasting food, typically meat, over an open fire or on a grill. It can also refer to the cooking equipment used for this method or a social event that features this style of cooking. The term barbeque varies by culture and region, as different places have their own styles and techniques.

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Heat of dissociation is the amount of heat energy required to break apart a specific chemical compound into its individual parts or elements. It is usually expressed in joules per mole or calories per mole. The heat of dissociation is positive if the process is endothermic (absorbs heat) and negative if it is exothermic (releases heat).

NNW stands for North-Northwest, which is a compass direction halfway between north and northwest, commonly used in navigation or meteorology.

Magicicada septendecim, sometimes called the Pharaoh cicada or the 17-year locust, is native to Canada and the United States and is the largest and most northern species of periodical cicada with a 17-year lifecycle.

Chinese mushroom, also known as Shiitake mushroom (Lentinula edodes), is an edible mushroom native to East Asia, widely cultivated and consumed in many Asian countries. It is typically recognized by its brown, slightly convex cap that ranges from 2 to 8 inches in diameter and its cream colored gills beneath. The term Chinese mushroom can also refer to several other types of mushrooms used in Chinese cooking, such as straw mushrooms, cloud ear mushrooms, and enoki mushrooms.