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Magnesium in Irish (Maignéisiam): Meaning, Pronunciation, Usage

The Irish for magnesium is maignéisiam, a masculine noun.
Updated October 2026Report a mistake

How to say “magnesium” in Irish

Irish:
maignéisiam
English:
magnesium
Word type:
noun
Gender:
masculine, fourth declension
Pronunciation:
“MAG-nay-shee-um”  /ˈmˠaɡnʲeːʃiəmˠ/
Various forms
Genitive singular:
maignéisiam, an mhaignéisiam (e.g. dó an mhaignéisiam, the burning of magnesium)

What does “maignéisiam” mean?

magnesium
Magnesium is a light, silvery-white metallic chemical element that burns with a bright white flame.Also: mg, metal element.

“Maignéisiam” with the article

Here is maignéisiam after the article (an t-alt).

an maignéisiam
the magnesium
No change after an

“Maignéisiam” in a sentence: Irish examples

Common Irish sentences using maignéisiam, the Irish word for magnesium.

Is miotal éadrom é maignéisiam.
Magnesium is a light metal.
Dódh an maignéisiam le lasair gheal bhán.
The magnesium burned with a bright white flame.
Tá go leor maignéisiam i nglasraí glasa.
There is plenty of magnesium in green vegetables.
Is é Mg siombail cheimiceach an mhaignéisiam.
Mg is the chemical symbol of magnesium.
Thóg an múinteoir stiall mhaignéisiam amach as an mbosca.
The teacher took a strip of magnesium out of the box.
Dúirt an dochtúir go raibh easpa maignéisiam orm.
The doctor said I was lacking in magnesium.
Bíonn maignéisiam sa sáile freisin.
There is magnesium in seawater too.

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Magnesium in Irish: frequently asked questions

What is the Irish for magnesium?

The Irish for magnesium is maignéisiam (pronounced “MAG-nay-shee-um”). It’s a masculine noun.

How do you pronounce maignéisiam in Irish?

Maignéisiam is said like “MAG-nay-shee-um” (IPA /ˈmˠaɡnʲeːʃiəmˠ/).

Does maignéisiam have a plural?

No plural form is given for maignéisiam in the standard. Many abstract and mass nouns in Irish have no plural.

Why does maignéisiam change to mhaignéisiam?

After words like mo (my) and do (your) the first letter is lenited: mo mhaignéisiam. After ár (our) it stays ár maignéisiam, because m does not take eclipsis.

Is 'maignéisiam' the same as 'maighnéis'?

No. 'Maignéisiam' is the metal magnesium, while 'maignéis' or 'mangainéis' words refer to other substances; check carefully, as 'mangainéis' is manganese.

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