Library / English Dictionary

URANIUM

Pronunciation (US):

(GB):

 I. (noun) 

Sense 1

Meaning:

A heavy toxic silvery-white radioactive metallic element; occurs in many isotopes; used for nuclear fuels and nuclear weapons

Synonyms:

atomic number 92; U; uranium

Classified under:

Nouns denoting substances

Hypernyms ("uranium" 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.)

Hyponyms (each of the following is a kind of "uranium"):

uranium 235 (a uranium isotope with mass number 235; capable of sustaining chain reactions)

uranium 238 (the commonest isotope of uranium; it is not fissionable but when irradiated with neutrons it produces fissionable plutonium 239)

Holonyms ("uranium" is a substance of...):

pitchblende; uraninite (a mineral consisting of uranium oxide and trace amounts of radium and thorium and polonium and lead and helium; uraninite in massive form is called pitchblende which is the chief uranium ore)

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