La·grange 
(lə-grānj, -gränj, lä-gräɴzh), Comte Joseph Louis 1736-1813.
(lə-grānj, -gränj, lä-gräɴzh), 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.
- irrefragably
- irrefrangible
- irrefrangibly
- irrefutability
- irrefutable
- irrefutably
- irreg.
- irregardless
- irregular
- irregular galaxy
- irregularity
- irregularly
- irrelative
- irrelatively
- irrelevance
- irrelevancy
- irrelevant
- irrelevantly
- irreligion
- irreligious
- irreligiously
- irreligiousness
- irremeable
- irremediable
- irremediably