| English Dictionary |
ATOMIC NUMBER 87
Dictionary entry overview: What does atomic number 87 mean?
• ATOMIC NUMBER 87 (noun)
The noun ATOMIC NUMBER 87 has 1 sense:
1. a radioactive element of the alkali-metal group discovered as a disintegration product of actinium
Familiarity information: ATOMIC NUMBER 87 used as a noun is very rare.
Dictionary entry details
Sense 1
Meaning:
A radioactive element of the alkali-metal group discovered as a disintegration product of actinium
Classified under:
Nouns denoting substances
Synonyms:
atomic number 87; Fr; francium
Hypernyms ("atomic number 87" is a kind of...):
metal; metallic element (any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.)
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"Absence makes the heart grow fonder." (Thomas Haynes Bayly)
"The most praised form of fluency is silence when talk isn't wise." (Arabic proverb)
"Some die; others bloom." (Corsican proverb)