Definition

1. Noun:
   • A fundamental particle is a particle in physics that is considered elementary or indivisible, meaning it is not composed of smaller constituent parts. These particles are the basic building blocks of all matter in the universe.

Usage

• The term "fundamental particle" is used in the context of particle physics to describe entities like quarks, electrons, and neutrinos.
• It is a formal, scientific term. In everyday conversation, people might use simpler terms like "elementary particle" or the names of specific particles.

Examples

• Noun:
  • The electron is a fundamental particle with a negative charge.
  • Scientists at CERN are searching for new fundamental particles.
  • Understanding fundamental particles is key to understanding the universe's composition.

Advanced Usage

• "To be considered a fundamental particle": To be classified as an elementary constituent of matter.
  • For decades, the proton was thought to be a fundamental particle, but we now know it is made of quarks.
• The concept is central to the Standard Model of particle physics, which classifies all known fundamental particles.

Variants and Related Words

• Elementary particle (n): A synonym for fundamental particle.
  • The photon is an elementary particle of light.
• Subatomic particle (n): A more general term for any particle smaller than an atom, which includes both fundamental particles (like electrons) and composite particles (like protons).
  • Protons and neutrons are subatomic particles found in the atomic nucleus.

Synonyms

• Elementary particle: A direct synonym.
• Basic constituent: A more general term for a fundamental component.

Related Phrases

• Fundamental force: One of the four basic interactions in nature (gravity, electromagnetism, strong nuclear force, weak nuclear force) that act upon fundamental particles.
  • Gravity is a fundamental force, but it is not well explained by the Standard Model of particle physics.

Notes

• The term is almost exclusively used in scientific contexts. Do not confuse it with "particle" in general grammar, which refers to a small word or a minute piece of something.
• In historical contexts, atoms were once thought to be fundamental particles, but this is no longer the case.

Noun

1. (physics) a particle that is less complex than an atom; regarded as constituents of all matter