# Lagrangian mechanics

> English word · Noun

## Definitions
1. A formulation of classical mechanics in terms of energy and action rather than forces, mathematically expressed by a function termed the Lagrangian.

## Etymology
First developed systematically by Joseph-Louis Lagrange in his Mécanique analytique (1788–89).

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/lagrangian-mechanics