Lagrangian

Lagrange +‎ -ian

• IPA^(key): /ləˈɡɹɑ(ː)nd͡ʒi.ən/, /ləˈɡɹeɪnd͡ʒi.ən/, /læˈɡɹɑ̃ʒi.ən/

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Lagrangian (not comparable)

1. Of or relating to Joseph Louis Lagrange.
2. (mechanics) Relating to Lagrangian mechanics.
3. (astrophysics) Of or relating to a Lagrange point.

   Hyponym: Trojan

Lagrangian (plural Lagrangians)

1. (mathematics) Ellipsis of Lagrangian function.
2. (mechanics, specifically) A function summarizing the dynamics of a physical system, typically in non-relativistic contexts amounting to the kinetic energy minus the potential energy, ${\displaystyle L=T-V}$.
3. (astrophysics) An object residing in a Lagrange point.

   Hyponym: Trojan

4. (astrophysics) Ellipsis of Lagrangian point; a Lagrange point.
5. (quantum mechanics) Ellipsis of Lagrangian density.