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Info: This web site is based on WordNet 3.0 from Princeton University.
English
noun
:
atomic number 87
1.
atomic number 87
(substance)
a radioactive element of the alkali-metal group discovered as a disintegration product of actinium
Synonyms
Fr
,
francium
Broader (hypernym)
metal
,
metallic element
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. English edition:
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.
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