elementary particle

noun
Updated on: 8 Apr 2018

Definition of elementary particle

: any of the particles of which matter and energy are composed or which mediate the fundamental forces of nature; especially : one whose existence has not been attributed to the combination of other more fundamental entities

Recent Examples of elementary particle from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'elementary particle.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of elementary particle

1934

in the meaning defined above

See Words from the same year
NEW! Time Traveler

ELEMENTARY PARTICLE Defined for English Language Learners

elementary particle

Definition of elementary particle for English Language Learners

  • physics : a particle (such as an electron or proton) that is smaller than an atom and does not appear to be made up of a combination of more basic things


Medical Dictionary

elementary particle

noun

medical Definition of elementary particle

1 : any of the particles of which matter and energy are composed or which mediate the fundamental forces of nature; especially : one (as the photon or the electron) whose existence has not been attributed to the combination of other more fundamental entities
2 : one of the structural units of mitochondrial cristae that are observable by the electron microscope usually as spheres or stalked spheres and are probably the seat of fundamental energy-producing reactions

Learn More about elementary particle


Seen and Heard

What made you want to look up elementary particle? Please tell us where you read or heard it (including the quote, if possible).

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

of the same or a similar kind or nature

Get Word of the Day daily email!

Test Your Vocabulary

May 2018 Words of the Day Quiz

  • spring-flowers
  • Which is a synonym of raillery?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!