alpha ray alpha radiator • Alphard · · · Info · Definitions · Synonyms · Characters · · alpha ray · · Text Common · · Latin · · Scripts 9 · · Length 3 · · Syllables Definitions · · · (noun) the radiation of alpha particles during radioactive decay. Synonyms: alpha radiation, alpha ray. · · Noun Definition 1 Synonyms · · · alpha radiation · · Synonym 1 Characters · · space U+0020 a latin small letter a U+0061 h latin small letter h U+0068 l latin small letter l U+006C p latin small letter p U+0070 r latin small letter r U+0072 y latin small letter y U+0079