francium Franciscanism • Francize · · · Info · Definitions · Synonyms · Characters · · francium · · Text Latin · · Script 8 · · Length Definitions · · · (noun) a radioactive element of the alkali-metal group discovered as a disintegration product of actinium. Synonyms: Fr, atomic number 87. · · Noun Definition 1 Synonyms · · · fr · · Synonym 1 atomic number 87 · · Synonym 2 Characters · · a latin small letter a U+0061 c latin small letter c U+0063 f latin small letter f U+0066 i latin small letter i U+0069 m latin small letter m U+006D n latin small letter n U+006E r latin small letter r U+0072 u latin small letter u U+0075