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radioactivity [ˌreɪdiəʊæk'tɪvəti, -oʊæk'tɪvət̬i] n
med.	الإِشْعِاعِيَّة   ؛النَشاطُ الإِشْعاعِيّ
radiol.	نشاط إشعاعى
radioactivity The property possessed by some atomic nuclei of disintegrating spontaneously, with loss of energy through emission of a charged particle and/or gamma radiation n
environ.	نشاط إشعاعي
English thesaurus
radioactivity [ˌreɪdiəʊæk'tɪvəti, -oʊæk'tɪvət̬i] abbr.
abbr.	ra
mil.	The property of a material emitting ionizing radiation
mil., logist.	Emission of radiations produced by the nucleus of the atom disintegration. (FRA)

radioactivity: 3 phrases in 2 subjects

Environment	1
Radiology	2