SINCE 1828
Lagrangian
noun
La·grang·ian
| \ lə-ˈgrän-jē-ən
, -ˈgräⁿ-zhē-
\
, -ˈgräⁿ-zhē-
\
Definition of Lagrangian
: a function that describes the state of a dynamic system in terms of position coordinates and their time derivatives and that is equal to the difference between the potential energy and kinetic energy — compare hamiltonian
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