+An **elementary particle** is a fundamental constituent of the universe, not known to be composed of smaller particles. These foundational entities, such as [Quarks](/wiki/quarks) and [Leptons](/wiki/leptons), are the most basic building blocks of all matter and energy.
+## See also
+- [Standard Model](/wiki/standard_model)
+- [Particle](/wiki/particle)
+- [Quantum Physics](/wiki/quantum_physics)
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