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Plankton in Irish (Planctón): Meaning, Pronunciation, Usage

The Irish for plankton is planctón, a masculine noun (plural planctóin).
Updated October 2026Report a mistake

How to say “plankton” in Irish

Irish:
planctón
English:
plankton
Word type:
noun
Gender:
masculine, first declension
Pronunciation:
“PLANK-tohn”  /ˈplˠaŋkt̪ˠoːnˠ/
Various forms
Plural:
planctóin (planktons)
Genitive singular:
planctóin, an phlanctóin (e.g. méid an phlanctóin, the amount of plankton)
Genitive plural:
planctón, na bplanctón (e.g. cineálacha na bplanctón, the types of plankton)

What does “planctón” mean?

plankton
Tiny plants and animals that drift in great numbers in the sea or in fresh water.Also: marine plankton, drifting organisms.

“Planctón” with the article

The plural of plankton in Irish is planctóin. Here is planctón after the article (an t-alt), in the singular and the plural.

an planctón
the plankton
No change after an
na planctóin
the planktons
Plural: no change after na

“Planctón” in a sentence: Irish examples

Common Irish sentences using planctón, the Irish word for plankton.

Itheann an míol mór planctón.
The whale eats plankton.
Tá an planctón an-bheag ar fad.
Plankton is extremely small.
Bíonn mórán planctóin san fharraige san earrach.
There is a lot of plankton in the sea in spring.
Mhair na héisc ar phlanctón.
The fish lived on plankton.
Rinne sí staidéar ar fhás an phlanctóin.
She studied the growth of plankton.
Tá planctón le fáil i lochanna freisin.
Plankton is found in lakes too.
Chonaiceamar planctón faoin micreascóp inniu.
We saw plankton under the microscope today.

Other nouns in Irish

More everyday Irish nouns to learn next.

Plankton in Irish: frequently asked questions

What is the Irish for plankton?

The Irish for plankton is planctón (pronounced “PLANK-tohn”). It’s a masculine noun and the plural is planctóin.

How do you pronounce planctón in Irish?

Planctón is said like “PLANK-tohn” (IPA /ˈplˠaŋkt̪ˠoːnˠ/).

What is the plural of plankton in Irish?

The plural of planctón is planctóin; with the article, na planctóin means “the planktons”. The genitive plural is planctón, as in cineálacha na bplanctón (the types of plankton).

Why does planctón change to phlanctón or bplanctón?

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

Is 'planctón' used in the plural?

Usually it is a mass noun, 'planctón', like English 'plankton'; the plural 'planctóin' is rare and means kinds of plankton.

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