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fishskin disease
fishtail
fishway
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fissile
fission
fission bomb
fission-track dating
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fission

fis·sion [ físh'n ]


noun 
Definition:
 
1. nuclear physics splitting of atomic nucleus releasing energy: the spontaneous or induced splitting of an atomic nucleus into smaller parts, usually accompanied by a significant release of energy

2. breaking up: the act or process of separating into parts

3. genetics division of an organism: the division of a single-celled organism into two equal parts, each part growing into a complete organism

[Early 17th century. < Latin fission-< fiss- (see fissi-)]
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