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addaword.gifdefinition of thorium

noun
a radioactive element, which some countries are planning to use as a source of nuclear power because it is considered to be safer than uranium
Officials are currently selecting a site for the reactor, which would be the first of its kind, using thorium for the bulk of its fuel instead of uranium – the fuel for conventional reactors.
Submitted from United Kingdom on 02/11/2011 14:35:00
Definition of thorium from the Open Dictionary – a public resource hosted by Macmillan English Dictionary Online

dark pool

a method of financial trading in which share prices are hidden and not openly available to the public

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spinnaker

an extra sail sometimes fitted on the front of a boat used for racing