radioactivity en · NOUN
Pronunciation
- /ˌreɪdɪəʊakˈtɪvɪti/
- (Southern-England) audio
Etymology
From radioactive + -ity or radio- + activity.
Meanings
-
(uncountable, usually) Spontaneous emission of ionizing radiation as a consequence of a nuclear reaction, or directly from the breakdown of an unstable nucleus.
Today, no one would intentionally smear radioactive materials on their face, but in 1933, the dangers of radioactivity were not yet fully understood.
2020 March 8, Jacopo Prisco, “When beauty products were radioactive”, in CNN:
- (uncountable, usually) The radiation so emitted; including gamma rays, alpha particles, neutrons, electrons, positrons, etc.
Forms
| Spelling | Features | Labels | Source |
|---|---|---|---|
| radioactivities | Number=Plur | lexicographic | |
| radio-activity | alternative | lexicographic |
Deriveds
Hyponyms
gamma decay · alpha decay · beta decay · spontaneous fission · electron capture
Relateds
becquerel · half-life · radioactive decay · radiation poisoning · activity · nuclear radiation · curie · radio- · radiation
Translations (75)
nb radioaktivitet (radiation emitted) · kk радиоактивтік (radiation emitted) · gd rèididheachd (emission of ionizing radiation) · es radioactividad (emission of ionizing radiation) · nl radioactiviteit (radiation emitted) · tr radyoaktivite (emission of ionizing radiation) · de Radioaktivität (radiation emitted) · da radioaktivitet (emission of ionizing radiation) · lb Radioaktivitéit (radiation emitted) · ru радиоакти́вность (radiation emitted) · ta கதிரியக்கம் (radiation emitted) · ga radaighníomhaíocht (radiation emitted) · eu erradioaktibitate (emission of ionizing radiation) · fo geislavirkni (emission of ionizing radiation) · uk радіоакти́вність (radiation emitted) · th กัมมันตภาพรังสี (emission of ionizing radiation) · fr radioactivité (emission of ionizing radiation) · pl promieniotwórczość (emission of ionizing radiation) · gd rèididheachd (radiation emitted) · fr radioactivité (radiation emitted) · uk радіоактивність (emission of ionizing radiation) · pt radioatividade (radiation emitted) · nn radioaktivitet (emission of ionizing radiation) · hi विकिरण (radiation emitted) · fi radioaktiivisuus (emission of ionizing radiation) · af radioaktiwiteit (emission of ionizing radiation) · is geislavirkni (emission of ionizing radiation) · th รังสี (radiation emitted) · pt radioatividade (emission of ionizing radiation) · ga radaighníomhaíocht (emission of ionizing radiation) · ca radioactivitat (radiation emitted) · kk радиобелсенділік (radiation emitted) · ro radioactivitate (emission of ionizing radiation) · ca radioactivitat (emission of ionizing radiation) · el ραδιενέργεια (emission of ionizing radiation) · ru радиоакти́вность (emission of ionizing radiation) · sk rádioaktivita (radiation emitted) · nb radioaktivitet (emission of ionizing radiation) · bg радиоактивност (emission of ionizing radiation) · sv radioaktivitet (radiation emitted) · ka რადიოაქტიურობა (emission of ionizing radiation) · ka რადიოაქტიურობა (radiation emitted) · cmn 放射 (radiation emitted) · cy ymbelydredd (radiation emitted) · he קרינה (radiation emitted) · eu erradioaktibitate (radiation emitted) · es radioactividad (radiation emitted) · cmn 放射線 /放射线 (radiation emitted) · tr radyoaktivite (radiation emitted) · ka რადიაქტივობა (radiation emitted) · kk радиоактивтік (emission of ionizing radiation) · ka რადიაქტივობა (emission of ionizing radiation) · ta கதிரியக்கம் (emission of ionizing radiation) · tl karagilapan (emission of ionizing radiation) · sv radioaktivitet (emission of ionizing radiation) · ko 방사능 (emission of ionizing radiation) · be радыеакты́ўнасць (radiation emitted) · cs radioaktivita (radiation emitted) · eo radioaktiveco (emission of ionizing radiation) · pl radioaktywność (emission of ionizing radiation) · fi radioaktiivisuus (radiation emitted) · el ραδιενέργεια (radiation emitted) · lt radioaktyvumas (emission of ionizing radiation) · hi विकिरणशीलता (emission of ionizing radiation) · ja 放射能 (emission of ionizing radiation) · nn radioaktivitet (radiation emitted) · cs radioaktivita (emission of ionizing radiation) · bg радиоакти́вност (radiation emitted) · cmn 放射性 (emission of ionizing radiation) · de Radioaktivität (emission of ionizing radiation) · vi sự phóng xạ (emission of ionizing radiation) · cy ymbelydredd (emission of ionizing radiation) · af radioaktiwiteit (radiation emitted) · he רדיואקטיביות (emission of ionizing radiation) · nl radioactiviteit (emission of ionizing radiation)