HyperDic: radioactivity

English > 1 sense of the word radioactivity:
NOUNprocessradioactivity, radiationthe spontaneous emission of a stream of particles or electromagnetic rays in nuclear decay
radioactivity > pronunciation
Soundsrey'diyowaektih'vahtiy; rey.diyowaektih'vahtiy
Rhymesability ... zloty: 638 rhymes with tiy...
English > radioactivity: 1 sense > noun 1, process
MeaningThe spontaneous emission of a stream of particles or electromagnetic rays in nuclear decay.
Synonymradiation
Narrowercorpuscular radiation, particulate radiationA stream of atomic or subatomic particles that may be charged positively (e.g. alpha particles) or negatively (e.g. beta particles) or not at all (e.g. neutrons)
BroaderemissionThe release of electrons from parent atoms
Spanishradiación, radiactividad, radioactividad
Catalanradioactivitat
Adjectivesradioactiveexhibiting or caused by radioactivity

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