long wave long-wandering • longway · · · Info · Definitions · Characters · · long wave · · Text Common · · Latin · · Scripts 9 · · Length 2 · · Syllables Definitions · · · (noun) a radio wave with a wavelength longer than a kilometer (a frequency below 300 kilohertz). Synonyms: long wave. · · Noun Definition 1 Characters · · space U+0020 a latin small letter a U+0061 e latin small letter e U+0065 g latin small letter g U+0067 l latin small letter l U+006C n latin small letter n U+006E o latin small letter o U+006F v latin small letter v U+0076 w latin small letter w U+0077