lithium

  1. Noun.  (uncountable) The simplest alkali metal, the lightest solid element, and the third lightest chemical element (''symbol'' Li) with an atomic number of 3.
  2. Noun.  (pharmaceutical drug, uncountable) Lithium carbonate or other preparations of lithium metal used to treat manic depression and bipolar disorders.
  3. Noun.  A lithium battery.

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This entry was last updated on RefTopia from its source on 3/20/2012.