Atomic.
If you mean "atomic" as in the Atomic Bomb, then the word "nuclear" could be substituted = Nuclear Bomb.
Atomic.
Mitosis
nuclear is the synonym
Nuclear energy requires an external source of energy to initiate the nuclear fission or fusion reactions that produce energy. This initial energy input is typically in the form of electricity or another type of fuel to start the chain reaction.
Origin.
The source of nuclear power is the nucleus of an atom; any atom. As long as there is mass in the universe there will be a source of nuclear power. Even if in the future we run out of the radioactive material we currently use to fuel nuclear power plants, it would be foolish to assume that we will never again be able to harness nuclear energy in another way.
One word for directing to a source for information is "refer".
People used to talk about atomic power and atomic bombs, but this is not correct, nuclear is the correct word to use. Why do you want another word? Nuclear means to do with the nucleus. 'Kernel' is another word which means the center of a body but in English we use it for nuts. In German nucleus is 'kern', and they have 'kernkraftwerke' for nuclear engineering, but why use a German word?
the answer for renewable is sources
Nuclear reactor.
Unoriginal Source