British Dictionary definitions for p. adrien m. dirac
Paul Adrien Maurice. 1902–84, English physicist, noted for his work on the application of relativity to quantum mechanics and his prediction of electron spin and the positron: shared the Nobel prize for physics 1933
(dĭ-rāk') British mathematician and physicist who developed a mathematical interpretation of quantum mechanics with which he was able to provide the first correct description of electron behavior. For this work Dirac shared with Erwin Schrödinger the 1933 Nobel Prize for physics.