a European composite plant, Senecio jacobaea, naturalized in North America, having numerous yellow flowers.
noun 1. a city in N Egypt, in the Nile delta. noun 1. a city in N Egypt, on the Nile delta: noted for its Muslim festivals. Pop: 413 000 (2005 est)
noun, Chemistry. 1. a salt of any tantalic acid. noun 1. any of various salts of tantalic acid formed when the pentoxide of tantalum dissolves in an alkali
adjective, Chemistry. 1. of or relating to tantalum, especially in the pentavalent state. adjective 1. of or containing tantalum, esp in the pentavalent state
noun, Chemistry. 1. an acid, HTaO 3 , that forms complex salts or tantalates. tantalic acid noun 1. a white gelatinous substance produced by hydrolysis of tantalic halides. It dissolves in strong bases to give tantalates