laplace

< /pyɛr siˈmɔ̃/Marquis de,1749–1827, French astronomer and mathematician.

noun

1. 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.

1. 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.