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 See also Particulate (disambiguation) Particle size (disambiguation)