fission
pronunciation
How to pronounce fission in British English:
UK [ˈfɪʃn]
How to pronounce fission in American English:
US [ˈfɪʃən]
-
- Noun:
- a nuclear reaction in which a massive nucleus splits into smaller nuclei with the simultaneous release of energy
- reproduction of some unicellular organisms by division of the cell into two more or less equal parts
Word Origin
- fission (n.)
- 1819, "division of a cell or organism," from Latin fissionem (nominative fissio) "a breaking up, cleaving," from past participle stem of findere "to split" (see fissure). Cognate with Old English bitan "to bite." Nuclear physics sense is 1939. As a verb, from 1929.
Example
- 1. Some byproducts of the nuclear fission are themselves radioactive .
- 2. Post-tsunami , mr mappus 's enthusiasm for fission looked politically dangerous .
- 3. Mr rajoy 's best weapon against regional fission is to make central government work .
- 4. The reactor 's role is to produce free neutrons through nuclear fission .
- 5. Uranium atoms are split into lighter atoms ( aka fission products ) .