gravitino

noun
grav·​i·​ti·​no | \ ˌgra-və-ˈtē-nō How to pronounce gravitino (audio) \

Definition of gravitino

: a hypothetical fermion that is associated with the graviton in theories of supergravity

First Known Use of gravitino

1977, in the meaning defined above

History and Etymology for gravitino

graviton + -ino (as in neutrino)

Keep scrolling for more

Learn More about gravitino

Statistics for gravitino

Look-up Popularity

Time Traveler for gravitino

The first known use of gravitino was in 1977

See more words from the same year

More from Merriam-Webster on gravitino

Britannica.com: Encyclopedia article about gravitino

Comments on gravitino

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

WORD OF THE DAY

a haphazard or makeshift solution

Get Word of the Day daily email!

Test Your Vocabulary

Summer 2019 Words of the Day Quiz

  • a-bowl-of-peach-sorbet-with-cut-peaches-next-to-it
  • Which is a synonym of desideratum?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

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!