Magnesium (noun)

1. A chemical element with the symbol Mg and atomic number 12, it is a silvery-white, light-weight metal.
2. A mineral that is abundant in the earth's crust and is an important component of many rocks and minerals.
3. A dietary supplement used to help maintain healthy bones and muscles, it is also an essential mineral for many enzymatic reactions in the body.

Origin:

The word "magnesium" comes from the latin word "magnes" which means "magnet" and "magnesia" which is the name of a district in greece where magnesite, a mineral that contains magnesium, was found. it was first discovered by sir humphry davy in 1808 and named after this district.

Examples:

1. Magnesium is an essential mineral that is needed for healthy bones and muscles.
2. The magnesium in the antacid tablet helped to neutralize the acid in her stomach.
3. Magnesium is used to create alloys with aluminum and zinc, which are used in aerospace industry.
4. The fireworks contained magnesium powder, which made them burn brightly.
5. The doctor recommended taking a magnesium supplement to help with her muscle cramps.