Source : WordNet®

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}, {Anton
         van Leuwenhoek}, {Anton van Leeuwenhoek}]