fis·sion

fis·sion
/ˈfıʃn̩/ noun [noncount]
1 physics : a process in which the nucleus of a heavy atom is split apart
◇ A large amount of energy is released when fission occurs. — called also nuclear fission — compare fusion
2 biology : a kind of reproduction in which a cell or body divides into two or more parts and each part grows into a whole new individual

Useful english dictionary. 2012.

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  • fis|sion — «FIHSH uhn», noun, verb. –n. 1. the splitting of atoms which releases tremendous amounts of energy and is used to start the chain reaction of an atomic explosion; nuclear fission. It occurs when the nucleus of an atom is bombarded by neutrons,… …   Useful english dictionary

  • fis|sion-track dating — «FIHSH uhn TRAK», a method of determining age of rocks and other geological formations by counting the characteristic tracks left by spontaneous fission of uranium 238 during the lifetime of each sample. The number of tracks is proportional to… …   Useful english dictionary

  • fis|sion|a|bil|i|ty — «FIHSH uh nuh BIHL uh tee», noun. the quality or state of being fissionable …   Useful english dictionary

  • fis|sion|a|ble — «FIHSH uh nuh buhl», adjective, noun. –adj. capable of nuclear fission; fissile: »The element plutonium…is highly fissionable (Willard F. Libby). –n. a fissionable atom or element: »Private exploitation of the atom was limited by a ban on patents …   Useful english dictionary

  • non|fis|sion|a|ble — «non FIHSH uh nuh buhl», adjective. not capable of nuclear fission …   Useful english dictionary

  • qua|si|fis|sion — «KWAY sy FIHSH uhn, zy ; KWAH see , zee », noun. a type of nuclear fission in which a bombarded nucleus, instead of dividing into two new and nearly equal parts, reproduces the original projectile and target particles …   Useful english dictionary

  • sion — abra·sion; ab·scis·sion; ab·ster·sion; ac·cen·sion; ac·ces·sion·al; ad·he·sion; ad·he·sion·al; ad·mis·sion; ad·pro·mis·sion; af·fu·sion; ag·gres·sion; al·li·sion; al·lu·sion; am·bi·ver·sion; an·i·mad·ver·sion; an·te·ver·sion; an·ti·mis·sion;… …   English syllables

  • fis — ca·na·fis·tu·la; con·fis·ca·ble; con·fis·cat·able; con·fis·ca·tion; con·fis·ca·tor; con·fis·ca·to·ry; fis·cal·i·ty; fis·cus; fis·si·den·ta·ce·ae; fis·si·den·ta·les; fis·sile; fis·si·lin·gual; fis·si·lin·guia; fis·sil·i·ty; fis·sion·abil·i·ty;… …   English syllables

  • fission — fis·sion …   English syllables

  • fissional — fis·sion·al …   English syllables

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