There is no exact analog. Fissure would be the most strictly correct, but typically use of the word "undergo" is preferred.
Examples:
Fusions however works as well both ways.
Fission. We don't have the technology to fuse atoms in a controlled way yet.
Oxygen undergoes fusion reactions in the cores of massive stars, where it can fuse into heavier elements. Oxygen does not undergo fission reactions naturally.
I currently use nuclear fusion.
No, fission and fusion are two distinct nuclear reactions. Fusion involves the joining of atomic nuclei to release energy, while fission involves the splitting of atomic nuclei. They are not directly connected processes, so fusion does not lead to fission.
An Atomic bomb is the detonator for a Hydrogen bomb to create enough heat for the fission - fusion chain reaction.
fission..sup
Fission.
Energy is released during fusion and fission.
Fusion releases more energy than fission.
Fission and fusion are opposite nuclear processes. Fission involves splitting a heavy nucleus into lighter ones, releasing energy, while fusion involves combining lighter nuclei to form a heavier nucleus, also releasing energy.
in atomic science, fission is the splitting of atoms, fusion is the fusing of atoms
Definition: energy from nuclear fission or fusion: the energy released by nuclear fission or fusion