Meaning & use

particle

noun·Academic

Last updated

UK/ˈpɑːtɪkl/
US/ˈpɑːrtɪkl/

Meanings

  1. nouncountable

    A very small piece or amount of something, such as dust or sand.

    Grammar: Often followed by of: a particle of dust.

    Patterns

    • a particle of something

    A particle of dust floated in the beam of sunlight.

    The filter traps every particle of smoke.

    Not a particle of evidence supported his story.

  2. nouncountablephysicstechnical

    In physics, a tiny unit of matter or energy, such as an electron, proton or quark.

    Grammar: Often used with a modifier: subatomic particle, charged particle.

    Patterns

    • a particle of something

    Scientists use accelerators to smash particles together.

    An electron is a charged particle that orbits the nucleus.

    Light can behave like both a wave and a particle.

  3. nouncountabletechnical

    In grammar, a short word such as to, up or not that has a function but little meaning of its own, often joining a verb to form a phrasal verb.

    Grammar: In give up, the word up is a particle.

    Patterns

    • adverb particle
    • infinitive particle

    In the phrase look after, after works as a particle.

    Learners often confuse a particle with a preposition.

    English uses the particle to before the base form of a verb.

Word forms

pluralparticles

Common combinations

subatomic particle
A neutron is a subatomic particle.
dust particle
A single dust particle can seed a raindrop.
particle accelerator
The particle accelerator spans several kilometers.
fine particles
Fine particles in the air can irritate the lungs.
adverbial particle
Up is an adverbial particle in the verb pick up.

Synonyms and how they differ

speck
Speck is an everyday word for a tiny spot, whereas particle is more scientific and neutral.
grain
Grain suggests something hard like sand or salt, while particle can be any tiny piece.
fragment
Fragment implies a piece broken off a larger whole, while particle can be naturally tiny.
atom
An atom is a specific unit of an element, whereas particle also covers parts of atoms.

Word family

particulate noun
a tiny solid or liquid particle in the air, often plural
particular adjective
specific, from the same root meaning small part
particulate adjective
made up of separate tiny particles

Commonly confused: particle or article? particle or participle?

particle vs article

An article is an item or a word like a, an, the, while a particle is a tiny piece or a function word like up.

particle vs participle

A participle is a verb form such as running or eaten, quite different from a particle.

Practice

In the verb phrase 'give up', the word 'up' is called a ___.

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