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Pen·ney(pĕn′ē), James Cash 1875-1971.
American business executive who built the J.C. Penney chain and pioneered the practice of employee profit-sharing.
(Biography) William George, Baron Penney of East Hendred. 1909–91, British mathematician. He worked on the first atomic bomb and became chairman of the UK Atomic Energy Authority (1964–67)