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Longitude in Irish (Fadlíne): Meaning, Pronunciation, Usage

The Irish for longitude is fadlíne, a feminine noun (plural fadlínte).
Updated October 2026Report a mistake

How to say “longitude” in Irish

Irish:
fadlíne
English:
longitude
Word type:
noun
Gender:
feminine, fourth declension
Pronunciation:
“FAD-leen-yuh”  /ˈfadˌlʲiːnʲə/
Various forms
Plural:
fadlínte (longitudes)
Genitive singular:
fadlíne, na fadlíne (e.g. líne fadlíne, a line of longitude)
Genitive plural:
fadlínte, na bhfadlínte (e.g. léarscáil na bhfadlínte, the map of longitudes)

What does “fadlíne” mean?

longitude
An imaginary line on the earth's surface running from pole to pole, used to measure distance east or west of Greenwich.Also: line of longitude, meridian.

“Fadlíne” with the article

The plural of longitude in Irish is fadlínte. Here is fadlíne after the article (an t-alt), in the singular and the plural.

an fhadlíne
the longitude
Lenition: f becomes fh after an (feminine noun)
na fadlínte
the longitudes
Plural: no change after na

“Fadlíne” in a sentence: Irish examples

Common Irish sentences using fadlíne, the Irish word for longitude.

Tomhaiseann fadlíne an t-achar soir nó siar.
Longitude measures the distance east or west.
Cad í fadlíne na háite seo?
What is the longitude of this place?
Ritheann na fadlínte ó phol go pol.
The lines of longitude run from pole to pole.
Tá Gaillimh níos faide siar ar fhadlíne ná Baile Átha Cliath.
Galway lies further west in longitude than Dublin.
Scríobh an domhanleithead agus an fhadlíne síos.
Write down the latitude and the longitude.
D'fhoghlaimíomar faoi fhadlínte sa rang tíreolaíochta.
We learned about longitude in geography class.
Tá uimhir na fadlíne marcáilte ar an léarscáil.
The longitude number is marked on the map.

Other nouns in Irish

More everyday Irish nouns to learn next.

Longitude in Irish: frequently asked questions

What is the Irish for longitude?

The Irish for longitude is fadlíne (pronounced “FAD-leen-yuh”). It’s a feminine noun and the plural is fadlínte.

How do you pronounce fadlíne in Irish?

Fadlíne is said like “FAD-leen-yuh” (IPA /ˈfadˌlʲiːnʲə/).

What is the plural of longitude in Irish?

The plural of fadlíne is fadlínte; with the article, na fadlínte means “the longitudes”. The genitive plural is fadlínte, as in léarscáil na bhfadlínte (the map of longitudes).

Why does fadlíne change to fhadlíne or bhfadlíne?

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

What is the Irish for latitude, the partner of 'fadlíne'?

Latitude is 'domhanleithead'; 'fadlíne' (literally 'long line') is longitude.

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