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the fruiting body of any of a variety of fleshy fungi of the order Agaricales, especially one that is edible. Poisonous species are popularly called toadstools.
mushroom poisoning poisoning resulting from ingestion of mushrooms; potentially deadly mushrooms include Amanita phalloides, A. verna, A. virosa, and certain other species that contain neurotoxins. Rapid identification of mushroom poisoning and treatment is critical. According to the Center for Food Safety and Applied Nutrition of the Food and Drug Administration, persons who have ingested poisonous mushrooms and are treated immediately have a mortality rate of 10 per cent, whereas those who are treated 60 or more hours later have a 60 to 90 per cent mortality rate.
noun A regional street term for psilocybin or psilocin mushrooms.
noun A poisonous mushroom. 50 of 2000 species of mushrooms are poisonous; the major toxin is a cyclic octapeptide amanitine, a selective RNA polymerase-II inhibitor present in Amanita and Galerina species. Amanita phalloides causes most mushroom deaths; mortality is 40–90%.
adjective A descriptive term for a structure or appearance consisting of a terminal expansion of a cylindrical structure.