Definitions

1. noun

A unit of energy equal to one million joules.

“The nuclear power plant released a massive amount of energy, equivalent to several megajoules of kinetic energy.”

2. noun

A large unit of energy used in scientific and technical contexts.

“The physicist calculated the energy released in the explosion to be in the order of megajoules.”

3. adjective

Extremely large or powerful, in terms of energy.

“The megajoule laser was used to cut through thick steel plates.”