Definition of fission Fission

/fɪˈʃʌn/ - [fishun] - fis•sion

We found 12 definitions of fission from 5 different sources.

What does fission mean?

Noun Plural: fissions
fission - reproduction of some unicellular organisms by division of the cell into two more or less equal parts
		agamogenesis, asexual reproduction reproduction without the fusion of gametes
fission - a nuclear reaction in which a massive nucleus splits into smaller nuclei with the simultaneous release of energy
		nuclear fission

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fission (Noun)
The process whereby one item splits to become two.
fission (Noun)
The process of splitting the nucleus of an atom into smaller particles; nuclear fission .
fission (Noun)
The process by which a bacterium splits to form two daughter cells.
fission (Verb)
To cause to undergo fission.
fission (Verb)
To undergo fission.

fission (n.)
A cleaving, splitting, or breaking up into parts.
fission (n.)
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.
fission (n.)
A process by which certain coral polyps, echinoderms, annelids, etc., spontaneously subdivide, each individual thus forming two or more new ones. See Strobilation.

fission
The splitting of a heavy nucleus into two roughly equal parts (which are nuclei of lower-mass elements), accompanied by the release of a relatively large amount of energy in the form of kinetic energy of the two parts and in the form of emission of neutrons and gamma rays (source: LBL).

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fission in sign language