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Etymology

lithium

/ˈlɪθiəm/

noun

Origin

Ancient Greek

λίθος (lithos) — stone

Overview

Meaning Now

  • A soft, silver-white, highly reactive alkali metal, the lightest of all metals.
  • A chemical element with the symbol Li and atomic number 3, commonly used in rechargeable batteries.

Literal older meaning

stone-like substance

Language path

Ancient Greek → Modern Latin → English

Earliest form

lithium

Earliest period

1818

Journey

Lithium was discovered in the mineral petalite by Johan August Arfwedson in 1817. Unlike other alkali metals found in plant ashes, this was first identified in a mineral, hence the name reflecting its 'stony' origin.

Evolution

  1. Ancient Greek

    λίθος

    “stone”

    Base for botanical and mineralogical terminology

  2. 1817

    lithion

    “alkaline substance derived from petalite”

    Coined by Arfwedson from petalite mineral

  3. 1818

    lithium

    “the element itself”

    Standardized suffix -ium added for metallic elements

Connections

Word parts

lith-

root

stone

-ium

suffix

metallic element

Related across languages

  • Swedish

    litium

    lithium

  • German

    Lithium

    lithium

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External references use DefinedTerm semantics.