radiation 2
noundomain: activity
Princeton WordNet [ver.3.1]
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EnglishDefinition
the act of spreading outward from a central source
Hypernym
emission 1
noun
the act of emitting; causing to flow forth
EnglishDerivationally related form
radiate 3
verb
extend or spread outward from a center or focus or inward towards a center
Hyponym
bombardment 3
noun
the act (or an instance) of subjecting a body or substance to the impact of high-energy particles (as electrons or alpha rays)
