lithium

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noun lith·i·um \ˈli-thē-əm\

Definition of lithium

  1. 1 :  a soft silver-white element of the alkali metal group that is the lightest metal known and that is used especially in alloys and glass, in chemical synthesis, and in storage batteries — see element table

  2. 2 :  a salt of lithium (such as lithium carbonate) used in psychiatric medicine

Origin and Etymology of lithium

New Latin, from lithia oxide of lithium, from Greek lithos


First Known Use: 1818


LITHIUM Defined for English Language Learners

lithium

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noun lith·i·um \ˈli-thē-əm\

Definition of lithium for English Language Learners

  • : a soft silver-white element that is the lightest metal known


Medical Dictionary

lithium

play
noun lith·i·um \ˈlith-ē-əm\

Medical Definition of lithium

  1. 1:  a soft silver-white element of the alkali metal group that is the lightest metal known and that is used in chemical synthesis and in storage batteries—symbol Li; see element table

  2. 2:  a lithium salt and especially lithium carbonate used in psychiatric medicine



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