fission rocket (plural fission rockets)

1. (astronautics) A spacecraft having a fission reactor that powers the rocket.
2. (astronautics) A nuclear-pulse rocket that uses fission-based atomic bombs to supply propulsive force.

• nuclear rocket
• fusion rocket

• Bussard ramjet
• nuclear-electric rocket
• nuclear-thermal rocket
• nuclear-thermoelectric rocket
• pulse rocket
• anti-matter rocket