Dictionary.net

Definitions of fission

  1. reproduction of some unicellular organisms by division of the cell into two more or less equal parts
  2. a nuclear reaction in which a massive nucleus splits into smaller nuclei with the simultaneous release of energy
  3. A cleaving, splitting, or breaking up into parts.
  4. A method of asexual reproduction among the lowest ( unicellular) organisms by means of a process of self- division, consisting of gradual division or cleavage of the into two parts, each of which then becomes a separate and independent organisms; as when a cell in an animal or plant, or its germ, undergoes a spontaneous division, and the parts again subdivide. See Segmentation, and Cell division, under Division.
  5. A process by which certain coral polyps, echinoderms, annelids, etc., spontaneously subdivide, each individual thus forming two or more new ones. See Strobilation.
  6. Division of a cell or its nucleus.
  7. Division by splitting.
  8. The act of cleaving, splitting or breaking up into parts; in physiol. multiplication by means of a process of self- division, consisting of gradual division or cleavage of the body into two parts, each of which then becomes a separate and independent individual, as when a vegetable or animal cell undergoes spontaneous division, the divided parts again subdividing, or an animalcule or polyp divides into two parts.
  9. A splitting or separating.
  10. A cleaving or breaking up into parts; the process by which animal and vegetable cells, and certain simple organisms, spontaneously divide into two independent ones.
  11. A cleaving or splitting into parts.
  12. Cleavage of cells; division of a unicellular organism into two or more parts, thereby reproducing its kind.
Loading...

Usage examples for fission

  1. Transverse fission has not been observed. – Freshwater Sponges, Hydroids & Polyzoa by Nelson Annandale
X