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Petroleum in Irish (Peitriliam): Meaning, Pronunciation, Usage

The Irish for petroleum is peitriliam, a masculine noun (plural peitriliamaí).
Updated October 2026Report a mistake

How to say “petroleum” in Irish

Irish:
peitriliam
English:
petroleum
Word type:
noun
Gender:
masculine, fourth declension
Pronunciation:
“pet-RIL-ee-um”  /pʲɛˈtʲɾʲɪlʲiəmˠ/
Various forms
Plural:
peitriliamaí (petroleums)
Genitive singular:
peitriliam, an pheitriliam (e.g. praghas an pheitriliam, the price of petroleum)
Genitive plural:
peitriliamaí, na bpeitriliamaí (e.g. anailís na bpeitriliamaí, the analysis of petroleums)

What does “peitriliam” mean?

petroleum
Crude oil taken from the ground and refined to make fuels such as petrol and diesel.Also: crude oil, oil, mineral oil.

Other Irish words for petroleum: ola (oil)

“Peitriliam” with the article

The plural of petroleum in Irish is peitriliamaí. Here is peitriliam after the article (an t-alt), in the singular and the plural.

an peitriliam
the petroleum
No change after an
na peitriliamaí
the petroleums
Plural: no change after na

“Peitriliam” in a sentence: Irish examples

Common Irish sentences using peitriliam, the Irish word for petroleum.

Is breosla iontaise é peitriliam.
Petroleum is a fossil fuel.
D'ardaigh praghas an pheitriliam arís inniu.
The price of petroleum rose again today.
Déantar plaisteach as peitriliam.
Plastic is made from petroleum.
Tá an peitriliam ag éirí níos daoire.
Petroleum is getting more expensive.
Aimsíodh peitriliam faoi ghrinneall na farraige.
Petroleum was found under the seabed.
Tá a lán tíortha ag brath ar pheitriliam.
Many countries depend on petroleum.
Oibríonn sé i dtionscal an pheitriliam.
He works in the petroleum industry.

Other nouns in Irish

More everyday Irish nouns to learn next.

Petroleum in Irish: frequently asked questions

What is the Irish for petroleum?

The Irish for petroleum is peitriliam (pronounced “pet-RIL-ee-um”). It’s a masculine noun and the plural is peitriliamaí.

How do you pronounce peitriliam in Irish?

Peitriliam is said like “pet-RIL-ee-um” (IPA /pʲɛˈtʲɾʲɪlʲiəmˠ/).

What is the plural of petroleum in Irish?

The plural of peitriliam is peitriliamaí; with the article, na peitriliamaí means “the petroleums”. The genitive plural is peitriliamaí, as in anailís na bpeitriliamaí (the analysis of petroleums).

Why does peitriliam change to pheitriliam or bpeitriliam?

Irish changes the start of some words after certain words. After mo (my) peitriliam becomes mo pheitriliam (lenition), and after ár (our) or i (in) it becomes ár bpeitriliam (eclipsis).

What is the difference between 'peitriliam' and 'peitreal'?

'Peitriliam' is crude oil, the raw material, while 'peitreal' is petrol, the refined fuel you put in a car.

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