delta ray delta potential • delta rhythm · · · Info · Definitions · Characters · · delta ray · · Text Common · · Latin · · Scripts 9 · · Length 3 · · Syllables Definitions · · · (noun) an electron ejected from matter by ionizing radiation. Synonyms: delta ray. · · Noun Definition 1 Characters · · space U+0020 a latin small letter a U+0061 d latin small letter d U+0064 e latin small letter e U+0065 l latin small letter l U+006C r latin small letter r U+0072 t latin small letter t U+0074 y latin small letter y U+0079