Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

  

fission

 
/ˈfɪʃ·ən/, /ˈfɪʒ-/ n [U]

Definition

physics the dividing of the nucleus of an atom, producing energy biology Fission is also the division of a living cell during reproduction in some very small organisms
(Definition of fission n from the Cambridge Academic Content Dictionary © Cambridge University Press)

“fission” in other dictionaries

More Results for “fission”

Word of the Day

rain on sb's parade

to do something that spoils someone's plans

Word of the Day

Blog

Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More