Definition of lithium in English:


Syllabification: lith·i·um
Pronunciation: /ˈliTHēəm


  • 1The chemical element of atomic number 3, a soft silver-white metal. It is the lightest of the alkali metals. (Symbol: Li)
    More example sentences
    • The group lithium - sodium - potassium has a valency of one, as does the group chlorine - bromine - iodine.
    • Elemental nitrogen, however, is only capable of oxidizing a few metals such as lithium and magnesium.
    • Personally, I would like to see neither battery used in the long run and we move to the lithium battery, because lithium is the lightest metal.
  • 1.1Lithium carbonate or another lithium salt, used as a mood-stabilizing drug.
    More example sentences
    • These include amphetamines, antidepressant drugs, caffeine, corticosteroids and lithium.
    • Moreover, despite the benefits of drugs such as lithium shown in a Cochrane review, pharmacological treatment for bipolar disorder is potentially toxic.
    • The current treatment for bipolar disorder is mood stabilizers such as lithium and anticonvulsants.


early 19th century: from lithia + -ium.

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