Hamiltonian

noun
Ham·il·to·ni·an | \ ˌha-məl-ˈtō-nē-ən \

Definition of Hamiltonian 

: a function that is used to describe a dynamic system (such as the motion of a particle) in terms of components of momentum and coordinates of space and time and that is equal to the total energy of the system when time is not explicitly part of the function — compare lagrangian

First Known Use of Hamiltonian

1926, in the meaning defined above

History and Etymology for Hamiltonian

Sir William Hamilton †1865 Irish mathematician

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The first known use of Hamiltonian was in 1926

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