Dictionary

lithium

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lithium

noun lith·i·um \ˈli-thē-əm\

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

Full Definition of LITHIUM

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

Origin of LITHIUM

New Latin, from lithia oxide of lithium, from Greek lithos
First Known Use: 1818

lithium

noun lith·i·um \ˈlith-ē-əm\   (Medical Dictionary)

Medical Definition of LITHIUM

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

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