SINCE 1828
isospin
noun
iso·spin
| \ ˈī-sə-ˌspin
\
\
Definition of isospin
: a quantum characteristic of a group of closely related subatomic particles (such as a proton and a neutron) handled mathematically like ordinary spin with the possible orientations in a hypothetical space specifying the number of particles of differing electric charge comprising the group
— called also isotopic spin
Keep scrolling for more
Comments on isospin
What made you want to look up isospin? Please tell us where you read or heard it (including the quote, if possible).
Test Your Vocabulary
Words from Greek and Latin Quiz
-
- Which of the following months comes from a Latin word for “ten”?
Can you spell these 10 commonly misspelled words?
TAKE THE QUIZ
Test Your Knowledge - and learn some interesting things along the way.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridged
Words at Play
Ask the Editors
Word Games
-
Words from Greek and Latin Quiz
Finally! A use for those SAT prep classes.
Take the quiz -
Name That Thing: Animal Edition
How many animals can you identify?
Take the quiz -
Spell It
Can you spell these 10 commonly misspelled words?
Take the quiz -
SCRABBLE® Sprint
SCRABBLE® fans, sharpen your skills!
Play the game
Share isospin
Resources for isospin