Glenn T(heodor) 1912–1999, U.S. chemist: chairman of the Atomic Energy Commission 1961–71; Nobel prize 1951.
Glenn Theodore. 1912–99, US chemist and nuclear physicist. With E.M. McMillan, he discovered several transuranic elements, including plutonium (1940), curium, and americium (1944), and shared a Nobel prize for chemistry 1951
American chemist who led the team that discovered the element plutonium in 1941. In 1944 they discovered americium and curium, and by bombarding these two elements with alpha rays, Seaborg produced the elements berkelium and californium. In 1951 Seaborg shared the Nobel Prize for chemistry with American atomic scientist Edwin McMillan, who had predicted the existence of plutonium in 1939.
noun, Chemistry, Physics. 1. a superheavy, synthetic, radioactive element with a very short half-life. Symbol: Sg; atomic number: 106. noun 1. a synthetic transuranic element, synthesized and identified in 1974. Symbol: Sg; atomic no: 106 seaborgium (sē-bôr’gē-əm) Symbol Sg A synthetic, radioactive element that is produced by bombarding californium with oxygen ions or bombarding lead […]
adjective 1. born in or of the sea, as naiads. 2. produced in or rising from the sea, as reefs.
adjective 1. transported by ship over the sea. 2. carried on or over the sea: a seaborne fog; seaborne cargoes. adjective 1. carried on or by the sea 2. transported by ship
noun 1. ship biscuit; hardtack.