1) Hungarian boy name 2) Leo szilard 3) Molecular biologist 4) Nuclear physicist 1) Hungarian surname 
[crater] Szilard is a damaged lunar crater that lies to the east-northeast of the crater Richardson. It is named after Leó Szilárd, the scientist who theorised nuclear chain reactions and famously worked on the atomic bomb during WWII. About a half-crater-diameter to the northwest is the large walled plain Harkhebi. Between Harkhebi and S...
[n] - United States physicist and molecular biologist who helped develop the first atom bomb and later opposed the use of all nuclear weapons (1898-1964)
Leo Szilard noun United States physicist and molecular biologist who helped develop the first atom bomb and later opposed the use of all nuclear weapons (1898-1964)
1898–1964, U.S. physicist, born in Hungary.