atomic number 4 atomic number 39 • atomic number 40 · · · Info · Definitions · Synonyms · Characters · · atomic number 4 · · Text Common · · Latin · · Scripts 15 · · Length 6 · · Syllables Definitions · · · (noun) a light strong brittle grey toxic bivalent metallic element. Synonyms: beryllium, Be, glucinium, atomic number 4. · · Noun Definition 1 Synonyms · · · beryllium · · Synonym 1 be · · Synonym 2 glucinium · · Synonym 3 Characters · · space U+0020 4 digit four U+0034 a latin small letter a U+0061 b latin small letter b U+0062 c latin small letter c U+0063 e latin small letter e U+0065 i latin small letter i U+0069 m latin small letter m U+006D n latin small letter n U+006E o latin small letter o U+006F r latin small letter r U+0072 t latin small letter t U+0074 u latin small letter u U+0075