Dictionary.com
Thesaurus.com

Fat Man

American  

noun

  1. the code name for the plutonium-core, implosion-type atom bomb the U.S. first tested and then dropped on Nagasaki in 1945.


Compare meaning

How does fat-man compare to similar and commonly confused words? Explore the most common comparisons:

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Fat Man and Little Boy are holding steady. apnews.com/article/dei-...

From Salon • Mar. 10, 2025

Elsewhere is a display meant to honor the Japanese people killed and injured by Fat Man and Little Boy, a smaller bomb dropped on Hiroshima three days earlier.

From New York Times • Apr. 26, 2024

Katie Hafner: So pretty much all of Los Alamos then retrenched around a different design, an implosion weapon that would become the Trinity device and then the Fat Man bomb that was dropped on Nagasaki.

From Scientific American • Aug. 3, 2023

It then made plutonium that fueled the Fat Man atomic bomb dropped on Nagasaki, Japan, in August 1945, that led to the end of Word War II.

From Seattle Times • May 23, 2022

Known as Fat Man, this was a large, round plutonium implosion bomb similar to the one tested at Trinity.

From "Bomb" by Steve Sheinkin

Vocabulary.com logo
by dictionary.com

Look it up. Learn it forever.

Remember "Fat Man" for good with VocabTrainer. Expand your vocabulary effortlessly with personalized learning tools that adapt to your goals.

Take me to Vocabulary.com