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| Subject | English | Thesaurus |
| missil. | fission/fusion | fission-fusion (MichaelBurov) |
| missil. | fission-fusion | fission/fusion (MichaelBurov) |
| missil. | pulsed fission-fusion engine | PuFF engine (MichaelBurov) |
| missil. | pulsed fission-fusion propulsion | PuFF propulsion (MichaelBurov) |