fission

Longman Dictionary of Contemporary English 5++朗文当代英语 5++LDOCE 5++朗文 5++

fis·sion /ˈfɪʃən/ noun [uncountable] technical 1. HPTBthe process of splitting an atom to produce large amounts of energy or an explosion 〔原子的〕裂变 → fusion2. HBthe process of dividing a cell into two or more parts 〔细胞的〕分裂

Examples from the Corpus

fission• They get electrical power from fission rods, and then they throw the fission rods into the briny sea.• Start to phase out nuclear fission power stations, which are prohibitively expensive and potentially hazardous.• In the mid-1950's nuclear fission had still to be turned into a commercial power source.• Both radioactive fission products and induced radioactivity in structural materials contribute to the problem of radioactive waste.• The isotope U-235 is unstable, decaying by a process called spontaneous fission.• Controlled fusion has fewer obvious negative aspects than fission.• Some of the fission fragments are themselves radioactive.Origin fission (1600-1700) Latin fissus, past participle of findere “to split”

fis·sion nounChineseSyllable

process an the of produce large to atom splitting Corpus

fission
fis‧sion /ˈfɪʃən/

noun [uncountable] technical

Date: 1600-1700
Language: Latin
Origin: fissus, past participle of findere 'to split'

1. the process of splitting an atom to produce large amounts of energy or an explosion ⇨ fusion
2. the process of dividing a cell into two or more parts

fis·sion

BrE

/ˈfɪʃn/

🔊

NAmE

/ˈfɪʃn/

🔊

noun

[uncountable]

(

also ˌnuclear ˈfission

)