Source : WordNet®

Anton van Leeuwenhoek
     n : Dutch pioneer microscopist who was among the first to
         recognize cells in animals and who gave the first
         accurate descriptions of microbes and spermatozoa and
         blood corpuscles (1632-1723) [syn: {Leuwenhoek}, {Leeuwenhoek},
          {Anton van Leuwenhoek}]