Lagrange definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
Lagrange, Comte Joseph Louis de 1736-1813; Fr. mathematician & astronomer
Lagrange definition by American Heritage Dictionary
, Comte Joseph Louis 1736-1813.
French mathematician and astronomer. He developed the calculus of variations (1755) and made a number of other contributions to the study of mechanics.