Dictionary

francium

noun fran·ci·um \ˈfran(t)-sē-əm\

Definition of FRANCIUM

:  a short-lived radioactive element of the alkali-metal group occurring naturally as a disintegration product of actinium and also produced artificially — see element table

Origin of FRANCIUM

New Latin, from France
First Known Use: 1946

francium

noun fran·ci·um \ˈfran(t)-sē-əm\   (Medical Dictionary)

Medical Definition of FRANCIUM

:  a radioactive element of the alkali-metal group discovered as a disintegration product of actinium and obtained artificially by the bombardment of thorium with protons—symbol Fr; see element table

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