15275094-n 'the time required for something to fall to half its initial value (in particular, the time for half the atoms in a radioactive substance to disintegrate)';
 
Chinese (simplified) 半衰期
English half life 1 , half-life
Indonesian half-life , waktu paruh
Japanese 半減期
Malaysian separuh hayat , half-life
Definitions
Japanese
物質の最初の価値が半分に下がるまでに必要とされる時間（特に、放射性物質の原子の半分が崩壊するまでの時間）
English
the time required for something to fall to half its initial value (in particular, the time for half the atoms in a radioactive substance to disintegrate)
Relations
Hypernym: time_period
Semantic Field: timen
External Links
 

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