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Alpha ray in Irish (Alfa-gha): Meaning, Pronunciation, Usage

The Irish for alpha ray is alfa-gha, a masculine noun (plural alfa-ghathanna).
Updated October 2026Report a mistake

How to say “alpha ray” in Irish

Irish:
alfa-gha
English:
alpha ray
Word type:
noun
Gender:
masculine
Pronunciation:
“AL-fuh-ghah”  /ˈalˠəfˠə ɣa/
Various forms
Plural:
alfa-ghathanna (alpha rays)
Genitive singular:
alfa-gha, an alfa-gha (e.g. fuinneamh an alfa-gha, energy of the alpha ray)
Genitive plural:
alfa-ghathanna, na n-alfa-ghathanna (e.g. astaíocht na n-alfa-ghathanna, the emission of the alpha rays)

What does “alfa-gha” mean?

alpha ray
A stream of alpha particles given off by a radioactive substance.Also: alpha radiation, alpha particle ray.

“Alfa-gha” with the article

The plural of alpha ray in Irish is alfa-ghathanna. Here is alfa-gha after the article (an t-alt), in the singular and the plural.

an t-alfa-gha
the alpha ray
Masculine nouns take t before a vowel after an
na halfa-ghathanna
the alpha rays
Plural: na adds h before a vowel

“Alfa-gha” in a sentence: Irish examples

Common Irish sentences using alfa-gha, the Irish word for alpha ray.

Is cineál radaíochta é alfa-gha.
An alpha ray is a type of radiation.
Ní théann an t-alfa-gha trí pháipéar.
The alpha ray does not pass through paper.
Tá raon an alfa-gha an-ghearr san aer.
The range of the alpha ray is very short in air.
Tugann úráiniam alfa-ghathanna amach.
Uranium gives off alpha rays.
D'fhoghlaimíomar faoi alfa-ghathanna sa rang fisice.
We learned about alpha rays in physics class.
Stopann leathán tanaí miotail na halfa-ghathanna.
A thin sheet of metal stops the alpha rays.
Bhí alfa-gha i gceist sa turgnamh sin.
An alpha ray was involved in that experiment.

Other nouns in Irish

More everyday Irish nouns to learn next.

Alpha ray in Irish: frequently asked questions

What is the Irish for alpha ray?

The Irish for alpha ray is alfa-gha (pronounced “AL-fuh-ghah”). It’s a masculine noun and the plural is alfa-ghathanna.

How do you pronounce alfa-gha in Irish?

Alfa-gha is said like “AL-fuh-ghah” (IPA /ˈalˠəfˠə ɣa/).

What is the plural of alpha ray in Irish?

The plural of alfa-gha is alfa-ghathanna; with the article, na halfa-ghathanna means “the alpha rays”. The genitive plural is alfa-ghathanna, as in astaíocht na n-alfa-ghathanna (the emission of the alpha rays).

Why does alfa-gha sometimes have a t or h in front of it?

Irish nouns beginning with a vowel take a prefix after certain words: an t-alfa-gha (the alpha ray), a halfa-gha (her alpha ray), a n-alfa-gha (their alpha ray), na halfa-ghathanna (the alpha rays).

What are the other kinds of rays in this group?

Alongside alfa-gha there are béite-gha (beta ray) and gáma-gha (gamma ray), all formed with ga meaning ray.

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