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Definitions

elementary particle

NOUN

basic constituent of matter

Synonyms

WEAK

atomic particle fundamental particle subatomic particle ultraelementary particle

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Researchers believe it is composed of a still-undetected type of elementary particle.

From Science Daily • Oct. 14, 2025

Panpsychism may remain a controversial theory in science that contends that consciousness extends to everything in the universe down to the smallest elementary particle, but Pollini’s playing has something to say about it.

From Los Angeles Times • Mar. 27, 2024

Answering these questions is the work of elementary particle physics.

From New York Times • Jan. 24, 2023

Electric charge is conserved in nuclear and elementary particle reactions, even when elementary particles are produced or destroyed.

From Textbooks • Aug. 12, 2015

There is, we are told, an infinite hierarchy of universes, so that an elementary particle, such as an electron, in our universe would, if penetrated, reveal itself to be an entire closed universe.

From "Cosmos" by Carl Sagan