Magnesium Definition

măg-nēzē-əm, -zhəm
noun
A lightweight, silver-white, malleable and ductile, metallic chemical element, one of the alkaline-earth metals, used in making several alloys and, because it burns with a hot, white light, in photographic flashbulbs, incendiary bombs, etc.: symbol, Mg; at. no. 12
Webster's New World
A light, flammable, silvery metal, and a chemical element (symbol Mg) with an atomic number of 12.
Wiktionary

(physics) The major stable isotope of magnesium, 2412Mg, having twelve protons and twelve neutrons; it amounts to about 79% of the element in nature.

Wiktionary

(physics) A minor stable isotope of magnesium, 2512Mg, having twelve protons and thirteen neutrons; it amounts to about 10% of the element in nature.

Wiktionary

(physics) A minor stable isotope of magnesium, 2612Mg, having twelve protons and fourteen neutrons; it amounts to about 11% of the element in nature.

Wiktionary
Synonyms:
  • atomic number 12
  • mg

Origin of Magnesium

  • From New Latin magnÄ“sium, from MagnÄ“sia (“region in Thessaly") +"Ž -ium.

    From Wiktionary

  • From magnesia

    From American Heritage Dictionary of the English Language, 5th Edition

Find Similar Words

Find similar words to magnesium using the buttons below.

Words Starting With

Words Ending With

Unscrambles

magnesium