atomic number 80 atomic number 8 • atomic number 81 · · · Info · Definitions · Synonyms · Characters · · atomic number 80 · · Text Common · · Latin · · Scripts 16 · · Length 8 · · Syllables Definitions · · · (noun) a heavy silvery toxic univalent and bivalent metallic element; the only metal that is liquid at ordinary temperatures. Synonyms: mercury, quicksilver, hydrargyrum, Hg, atomic number 80. · · Noun Definition 1 Synonyms · · · mercury · · Synonym 1 quicksilver · · Synonym 2 hydrargyrum · · Synonym 3 hg · · Synonym 4 Characters · · space U+0020 0 digit zero U+0030 8 digit eight U+0038 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