Share this entry

megaton Line breaks: mega|ton
Pronunciation: /ˈmɛɡətʌn/
(also megatonne)

Definition of megaton in English:


A unit of explosive power chiefly used for nuclear weapons, equivalent to one million tons of TNT: H-bombs of fifteen megatons each
More example sentences
  • Were the asteroid to hit Earth, it would enter the atmosphere at nearly 103,000 km/h and strike with the explosive energy of 1.2 million megatons of TNT.
  • The largest weapon of this kind known to have been tested was estimated to be a 58 megaton (58 million tonnes of TNT) device produced by the Soviet Union during the height of the cold war.
  • Nearby in Balaclava (yes, the hat is named after this place - look it up), a submarine base is cut out of the side of a mountain, making it invisible to surveillance and able to withstand a 10 megaton nuclear explosion.

Words that rhyme with megaton

stepson • godson • kiloton

Definition of megaton in:

Share this entry


What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day fortissimo
Pronunciation: fɔːˈtɪsɪməʊ
(especially as a direction) very loud or loudly