crystal set crystal sand • crystal-smooth · · · Info · Definitions · Characters · · crystal set · · Text Common · · Latin · · Scripts 11 · · Length 3 · · Syllables Definitions · · · (noun) an early radio receiver using a crystal detector. Synonyms: crystal set. · · Noun Definition 1 Characters · · space U+0020 a latin small letter a U+0061 c latin small letter c U+0063 e latin small letter e U+0065 l latin small letter l U+006C r latin small letter r U+0072 s latin small letter s U+0073 t latin small letter t U+0074 y latin small letter y U+0079