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Definition of lithium

lithium

/ˈlɪθ.i.əm/
lith · i · um
Adjective:lithic
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lithium Lexical Profile

lithium Game Scores & Validity

• noun

1

A soft, silver-white metallic chemical element (symbol Li, atomic number 3) that is the lightest of all metals and is widely used in rechargeable batteries, ceramics, and alloys.

Example

"Global demand for lithium has surged due to the rapid expansion of electric vehicles and portable electronics."

2

A chemical salt of this element (such as lithium carbonate or lithium citrate) used medicinally as a mood-stabilizing drug, especially in the treatment of bipolar disorder.

Example

"The psychiatrist prescribed lithium to help regulate the patient's severe mood swings."

• Rhymes for lithium

• Nearby Words

lithe
lithely
litheness
lithium
lithodora
lithograph
lithophragma

Word Origin & Etymology

Coined in 1818 by Swedish chemist Jöns Jacob Berzelius in Modern Latin from Ancient Greek 'lithos' (meaning 'stone'), because the element was discovered in a mineral rather than in plant matter like sodium and potassium.

Cite this Entry

Wordmom. (2026). Definition of Lithium. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/lithium
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