fission
/'fiʃn/
Definition
- Noun:
- A nuclear reaction in which a massive atomic nucleus splits into smaller nuclei, releasing a large amount of energy: This is the primary meaning in physics, referring to processes like those in nuclear reactors or atomic bombs.
- A form of asexual reproduction in which a single-celled organism divides into two or more approximately equal parts: This is the primary meaning in biology, describing how organisms like bacteria or protozoa reproduce.
Usage Examples
- Noun (Physics):
- Nuclear power plants generate electricity through the process of fission.
- The energy released by the fission of uranium atoms is immense.
- Noun (Biology):
- Binary fission is a common method of reproduction for bacteria.
- The amoeba underwent fission, resulting in two identical daughter cells.
Advanced Usage
- "Nuclear fission": The complete term for the physical process.
- The discovery of nuclear fission paved the way for both nuclear energy and weapons.
- "Binary fission": The complete term for the biological process where one cell divides into two.
- During binary fission, the bacterial DNA replicates before the cell splits.
Variants and Related Words
- Fissionable (adj): Capable of undergoing nuclear fission.
- Uranium-235 is a fissionable material.
- Fissile (adj): Synonymous with fissionable in physics; also means easily split or divided.
- The treaty aimed to control the trade of fissile materials.
Synonyms
- Physics: Nuclear splitting, atomic splitting.
- Biology: Division, splitting, asexual reproduction.
Related Phrases
- "Chain reaction": A series of fissions where neutrons released by one fission cause further fissions.
- A controlled chain reaction is essential for a nuclear reactor to function.
- "Fission product": The smaller atomic fragments resulting from nuclear fission.
- The safe disposal of radioactive fission products is a major challenge.
Related Idioms
(Note: 'Fission' is a technical term and is not commonly used in idiomatic expressions. The following phrases use the concept metaphorically.) - "To cause fission": To cause a dramatic split or division within a group. - The controversial policy threatened to cause fission within the political party.
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
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