Definitions of Fischer:

• noun:   United States chess master; world champion from 1972 to 1975 (born in 1943)
• noun:   German chemist noted for work on synthetic sugars and the purines (1852-1919)
• noun:   German chemist noted for his synthesis of hemin (1881-1945)
• name:  A surname (common: 1 in 4761 families; popularity rank in the U.S.: #554)