radioactivity

English

Etymology

radioactive +‎ -ity

Noun

radioactivity (plural radioactivities)

1. Spontaneous emission of ionizing radiation as a consequence of a nuclear reaction, or directly from the breakdown of an unstable nucleus.
2. The radiation so emitted; including gamma rays, alpha particles, neutrons, electrons, positrons, etc.

Related terms

• radiation

Translations

emission of ionizing radiation

• Catalan: radioactivitat (ca) f
• Chinese:

  Mandarin: 放射性 (cmn) (fàngshèxìng)

• Czech: radioaktivita (cs) f
• Danish: radioaktivitet (da) c
• Finnish: radioaktiivisuus (fi)

• German: Radioaktivität (de) f
• Greek: ραδιενέργεια (el) (radienérgeia) f
• Romanian: radioactivitate (ro)
• Russian: радиоактивность (ru) (radioaktívnost') f
• Spanish: radioactividad (es) f
• Swedish: radioaktivitet (sv) c

radiation emitted

• Catalan: radioactivitat (ca) f
• Chinese:

  Mandarin: 放射 (cmn) (fàngshè), 放射線 (cmn), 放射线 (cmn) (fàngshèxiàn)

• Czech: radioaktivita (cs) f
• Finnish: radioaktiivisuus (fi)
• German: Radioaktivität (de) f

• Greek: ραδιενέργεια (el) (radienérgeia) f
• Luxembourgish: Radioaktivitéit (lb) f
• Russian: радиоактивность (ru) (radioaktívnost') f
• Spanish: radioactividad (es) f
• Swedish: radioaktivitet (sv) c

The translations below need to be checked and inserted above into the appropriate translation tables, removing any numbers. Numbers do not necessarily match those in definitions. See instructions at Help:How to check translations.

Translations to be checked

• Dutch: radioactiviteit (nl) f
• French: radioactivité (fr) f
• Irish: radaighníomhaíocht (ga) f

• Italian: radioattività (it) f
• Portuguese: radioatividade (pt) f
• Slovene: radioaktivnost m

See also

• half-life

External links

• Radioactive decay on Wikipedia.Wikipedia:Radioactive decay