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Definition of magnesium

magnesium

/mæɡˈniːziəm/
mag · ne · si · um

Adjective:magnesian
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magnesium Lexical Profile

magnesium Game Scores & Validity

• noun

1

An essential dietary mineral macronutrient required for hundreds of vital biochemical reactions in the human body, including energy production, nerve function, and muscle contraction.

Example

"Dark leafy greens, nuts, seeds, and whole grains are excellent natural dietary sources of magnesium."


2

A silvery-white, highly reactive alkaline earth metal and chemical element with atomic number 12, known for burning with a brilliant white flame and widely used in lightweight alloys.

Example

"The aerospace industry frequently uses magnesium alloys to manufacture lightweight structural components for aircraft and spacecraft."

Word Nuance & Usage

Often confused in spelling and pronunciation with 'manganese', though the two are entirely distinct chemical elements with different industrial and biological properties.

• Rhymes for magnesium

Word Origin & Etymology

Coined in 1808 by English chemist Sir Humphry Davy from 'magnesia' (magnesium oxide), which was named after Magnesia, a district in Thessaly, Greece, where the mineral was found. The suffix '-ium' was added to denote a metallic element.

Usage Trend

Historical frequency of usage in published text.

180019102020

Cite this Entry


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