Crossword clues for the word: LAPLACE The word LAPLACE has appeared as an answer to at least 7 crossword clues on different crossword puzzles. Crossword clues for LAPLACE Showing 1 to 7 of 7 results Clue(s) "French astronomer who wrote the seminal ""Celestial Mechanics""" French astronomer French astronomer/mathematician who wrote 'Traité de Mécanique Céleste' French mathematician/astronomer French pioneer in planetary orbital theory Marquis de ___ (French mathematician and astronomer) Mathematician/astronomer Pierre Simon