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Leopold II, king of the Belgians

(Encyclopedia) Leopold II, 1835–1909, king of the Belgians (1865–1909), son and successor of Leopold I. His reign saw great industrial and colonial expansion. In 1876 he organized, with the help of H…

ray, in zoology

(Encyclopedia) ray, extremely flat-bodied cartilaginous marine fish, related to the shark. The pectoral fins of most rays are developed into broad, flat, winglike appendages, attached all along the…