megaton

• Unidade de potência explosiva equivalente a um milhão de toneladas de TNT, usada geralmente para medir a potência de armas nucleares; também designa um peso de um milhão de toneladas.

A unit of explosive power equivalent to one million tons of TNT, commonly used to measure the yield of nuclear weapons; also refers to a weight of one million tons.

1. Explosive power unitC1formaltechnical

   A unit used to measure the energy released by an atomic bomb, equal to one million tons of TNT.

   Megaton

   • The bomb had a yield of 50 megatons.
   • The treaty limited testing to under 1 megaton.
   • The explosion was equivalent to 20 megatons of TNT.

2. Unit of weightC1formalscientific

   A unit of mass equal to one million tons.

   Unidade de peso

   • The cargo ship can carry over 1 megaton of ore.
   • The glacier lost several megatons of ice last year.
   • The asteroid is estimated to weigh 100 megatons.