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cal·i·for·ni·um | \ ˌka-lə-ˈfȯr-nē-əm 
\
\Definition of californium
: a radioactive chemical element with atomic number 98 that is produced artificially from the decay of berkelium and that is used chiefly as a neutron source in radiography and to start nuclear reactors — see Chemical Elements Table
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californium
nouncal·i·for·ni·um | \ ˌkal-ə-ˈfȯr-nē-əm \
\Medical Definition of californium
: an artificially prepared radioactive element discovered by bombarding an isotope of curium with alpha particles
—symbol Cf — see Chemical Elements Table
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Time Traveler for californium
The first known use of californium was in 1950
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