The Britannica Dictionary
mobile search
Home
Ask the Editor
Word of the Day
Quizzes
Core Vocabulary
Browse the Dictionary
×
Britannica Homepage
Ask the Editor
Word of the Day
Quizzes
Core Vocabulary
Browse the Dictionary
The Britannica Dictionary
positron
1 ENTRIES FOUND:
positron
(noun)
positron
/
ˈ
pɑːzəˌtrɑːn/
noun
plural
positrons
positron
/
ˈ
pɑːzəˌtrɑːn/
noun
plural
positrons
Britannica Dictionary definition of POSITRON
[
count
]
physics
:
a very small particle of matter that has a positive charge of electricity and that travels around the nucleus of an atom
ASK THE EDITOR
In what ways is the word 'fish' used as singular and plural?
See the answer »
QUIZZES
Vocabulary Quiz
Test your word power
Take the Quiz »
Name That Thing
Take our visual quiz
Test Your Knowledge »
WORD OF THE DAY
egotist
:
a person who has the feeling or belief that they are better, more important, more talented, etc., than other people
Learn More »