分裂は英語で
fission

英語の定義

fission
1. n. The process whereby one item splits to become two.
2. n. (physics) The process of splitting the nucleus of an atom into smaller particles; nuclear fission
3. n. (biology) The process by which a bacterium splits to form two daughter cells.
4. v. To cause to undergo fission.
5. v. (intransitive) To undergo fission.