< /pyɛr siˈmɔ̃/Marquis de,1749–1827, French astronomer and mathematician.
noun
- Pierre Simon (pjɛr simɔ̃), Marquis de Laplace. 1749–1827, French mathematician, physicist, and astronomer. He formulated the nebular hypothesis (1796). He also developed the theory of probability
in scientific phrases, a reference to French astronomer and mathematician Pierre Simon, Marquis de Laplace (1749-1827). See more at nebular hypothesis.
- French mathematician and astronomer noted for his theory of a nebular origin of the solar system and his investigations into gravity and the stability of planetary motion. He also made important contributions to the theory of probability.