Look up particle in Wiktionary, the free dictionary.

A particle in the physical sciences is a small localized object to which can be ascribed physical properties.

Particle may also refer to:

Science

• Particle (ecology), in marine and freshwater ecology, a small object
• Colloidal particle, part of a one-phase system of two or more components where the particles aren't individually visible
  • Particle, the solid or liquid particles in an aerosol
• Granular material
• Particulates, in the areas of atmospheric physics and air pollution
• Nanoparticle, an object between 1 and 100 nanometers that behaves as a whole unit
• Point particle, or point mass, an idealization of an object with finite mass but of zero size
• A particle of a medium in continuum mechanics, meaning an infinitesimal portion of it.
• Self-propelled particles, a concept used in statistical physics to model swarms
• Subatomic particle:
  • Elementary particle, or fundamental particle, a particle of which other particles are composed
  • Particle physics, the study of subatomic particles
  • See list of particles for more uses
• Suspended solids, in a liquid

Arts, entertainment, and media

• Particle (band), a 2000 jam band from Los Angeles, California
• Particle (film), a 2012 Turkish film
• Particles (film), a 2019 French film
• "Particles" (song), a 2021 single by Jessica Simpson

Computing

• Particle, a US HTML5 web app company acquired by Apple in 2012
• Particle system, in computer graphics, a technique to simulate certain fuzzy phenomena

Other uses

• Grammatical particle, a function word