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Mollusc in Irish (Moileasc): Meaning, Pronunciation, Usage

The Irish for mollusc is moileasc, a masculine noun (plural moilisc).
Updated October 2026Report a mistake

How to say “mollusc” in Irish

Irish:
moileasc
English:
mollusc
Word type:
noun
Gender:
masculine, first declension
Pronunciation:
“MUL-ask”  /ˈmˠɛlʲəsˠk/
Various forms
Plural:
moilisc (molluscs)
Genitive singular:
moilisc, an mhoilisc (e.g. blaosc an mhoilisc, the shell of the mollusc)
Genitive plural:
moileasc, na moileasc (e.g. blaoscanna na moileasc, the shells of the molluscs)

What does “moileasc” mean?

mollusc
A soft-bodied invertebrate animal, usually with a shell, such as a snail, mussel or octopus.Also: mollusk, shellfish.

“Moileasc” with the article

The plural of mollusc in Irish is moilisc. Here is moileasc after the article (an t-alt), in the singular and the plural.

an moileasc
the mollusc
No change after an
na moilisc
the molluscs
Plural: no change after na

“Moileasc” in a sentence: Irish examples

Common Irish sentences using moileasc, the Irish word for mollusc.

Is moileasc é an seilide.
The snail is a mollusc.
Tá an moileasc i bhfolach faoin gcloch.
The mollusc is hiding under the stone.
Bhí blaosc an mhoilisc briste.
The mollusc's shell was broken.
Maireann a lán moilisc san fharraige.
Many molluscs live in the sea.
Is moilisc iad na diúilicíní agus na hoisrí.
Mussels and oysters are molluscs.
Fuair mé moileasc beag sa linn charraige.
I found a small mollusc in the rock pool.
Rinneamar staidéar ar mhoilisc sa rang bitheolaíochta.
We studied molluscs in biology class.

Other nouns in Irish

More everyday Irish nouns to learn next.

Mollusc in Irish: frequently asked questions

What is the Irish for mollusc?

The Irish for mollusc is moileasc (pronounced “MUL-ask”). It’s a masculine noun and the plural is moilisc.

How do you pronounce moileasc in Irish?

Moileasc is said like “MUL-ask” (IPA /ˈmˠɛlʲəsˠk/).

What is the plural of mollusc in Irish?

The plural of moileasc is moilisc; with the article, na moilisc means “the molluscs”. The genitive plural is moileasc, as in blaoscanna na moileasc (the shells of the molluscs).

Why does moileasc change to mhoileasc?

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

Is 'moileasc' the same as 'sliogán'?

No: 'moileasc' is the animal itself, while 'sliogán' means a shell. Many molluscs have a 'sliogán', but not all, for example the octopus, 'ochtapas'.

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