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Table of Contents -- francium POS
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WORDNET DICTIONARY
OXFORD DICTIONARY

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francium

Noun

fran=ci=um

WORDNET DICTIONARY

francium(n = noun.substance) atomic number 87, fr - a radioactive element of the alkali-metal group discovered as a disintegration product of actinium;

is a kind of metal, metallic element

francium, n. Chem. a radioactive metallic element occurring naturally in uranium and thorium ores.

Usage

Symb.: Fr.

Etymology

mod.L f. France (the discoverer's country)