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Entomology in Irish (Feithideolaíocht): Meaning, Pronunciation, Usage

The Irish for entomology is feithideolaíocht, a feminine noun.
Updated October 2026Report a mistake

How to say “entomology” in Irish

Irish:
feithideolaíocht
English:
entomology
Word type:
noun
Gender:
feminine, third declension
Pronunciation:
“FEH-hid-oh-lee-ukht”  /ˈfʲɛhɪdʲoːl̪ˠiːxt̪ˠ/
Various forms
Genitive singular:
feithideolaíochta, na feithideolaíochta (e.g. léachtóir feithideolaíochta, lecturer in entomology)

What does “feithideolaíocht” mean?

entomology
The scientific study of insects.Also: study of insects, insect science.

“Feithideolaíocht” with the article

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

an fheithideolaíocht
the entomology
Lenition: f becomes fh after an (feminine noun)

“Feithideolaíocht” in a sentence: Irish examples

Common Irish sentences using feithideolaíocht, the Irish word for entomology.

Is brainse den zó-eolaíocht í an fheithideolaíocht.
Entomology is a branch of zoology.
Tá suim mhór aici san fheithideolaíocht.
She is very interested in entomology.
Rinne sé staidéar ar fheithideolaíocht san ollscoil.
He studied entomology at university.
Is saineolaí feithideolaíochta é mo dheartháir.
My brother is an expert in entomology.
Cheannaigh mé leabhar feithideolaíochta inniu.
I bought an entomology book today.
Baineann an fheithideolaíocht le feithidí de gach cineál.
Entomology deals with insects of every kind.
Tá roinn feithideolaíochta nua ag an ollscoil.
The university has a new entomology department.

Other nouns in Irish

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Entomology in Irish: frequently asked questions

What is the Irish for entomology?

The Irish for entomology is feithideolaíocht (pronounced “FEH-hid-oh-lee-ukht”). It’s a feminine noun.

How do you pronounce feithideolaíocht in Irish?

Feithideolaíocht is said like “FEH-hid-oh-lee-ukht” (IPA /ˈfʲɛhɪdʲoːl̪ˠiːxt̪ˠ/).

Does feithideolaíocht have a plural?

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

Why does feithideolaíocht change to fheithideolaíocht or bhfeithideolaíocht?

Irish changes the start of some words after certain words. After mo (my) feithideolaíocht becomes m'fheithideolaíocht (lenition), and after ár (our) or i (in) it becomes ár bhfeithideolaíocht (eclipsis).

What is the word for an entomologist?

An entomologist is 'feithideolaí', formed from 'feithid' (insect) like 'feithideolaíocht'.

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