Wordnet 3.0
NOUN (1)
1. 
 French mathematician and astronomer who formulated the nebular hypothesis concerning the origins of the solar system and who developed the theory of probability (1749-1827); 
[syn: Laplace, Marquis de Laplace, Pierre Simon de Laplace]
WordNet (r) 3.0 (2006):
Marquis de Laplace
    n 1: French mathematician and astronomer who formulated the
         nebular hypothesis concerning the origins of the solar
         system and who developed the theory of probability
         (1749-1827) [syn: Laplace, Marquis de Laplace, Pierre
         Simon de Laplace]