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Delta in Irish (Deilt): Meaning, Pronunciation, Usage

The Irish for delta is deilt, a feminine noun (plural deilteanna).
Updated October 2026Report a mistake

How to say “delta” in Irish

Irish:
deilt
English:
delta
Word type:
noun
Gender:
feminine, second declension
Pronunciation:
“jelt”  /dʲelʲtʲ/
Various forms
Plural:
deilteanna (deltas)
Genitive singular:
deilte, na deilte (e.g. talamh na deilte, the land of the delta)
Genitive plural:
deilteanna, na ndeilteanna (e.g. léarscáil na ndeilteanna, the map of the deltas)

What does “deilt” mean?

“Deilt” has two alternative meanings. The most common comes first.

delta
A flat, roughly triangular area of land formed where a river splits into branches before entering the sea.Also: river delta, estuary delta.
1 other meaning:
2delta
The fourth letter of the Greek alphabet.Also: Greek letter delta.

“Deilt” with the article

The plural of delta in Irish is deilteanna. Here is deilt after the article (an t-alt), in the singular and the plural.

an deilt
the delta
No change: d and t are not lenited after an
na deilteanna
the deltas
Plural: no change after na

“Deilt” in a sentence: Irish examples

Common Irish sentences using deilt, the Irish word for delta.

Tá deilt mhór ag béal na Níle.
There is a large delta at the mouth of the Nile.
Tá an deilt an-torthúil.
The delta is very fertile.
Cónaíonn a lán daoine i ndeilt na habhann.
Many people live in the river's delta.
Tá ithir na deilte saibhir.
The soil of the delta is rich.
D'fhoghlaimíomar faoi dheilteanna sa rang tíreolaíochta.
We learned about deltas in geography class.
Tá go leor éan sa deilt sin.
There are lots of birds in that delta.
Is í deilt an ceathrú litir in aibítir na Gréigise.
Delta is the fourth letter of the Greek alphabet.

Other nouns in Irish

More everyday Irish nouns to learn next.

Delta in Irish: frequently asked questions

What is the Irish for delta?

The Irish for delta is deilt (pronounced “jelt”). It’s a feminine noun and the plural is deilteanna.

How do you pronounce deilt in Irish?

Deilt is said like “jelt” (IPA /dʲelʲtʲ/).

What is the plural of delta in Irish?

The plural of deilt is deilteanna; with the article, na deilteanna means “the deltas”. The genitive plural is deilteanna, as in léarscáil na ndeilteanna (the map of the deltas).

Why does deilt change to dheilt or ndeilt?

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

Is 'deilt' the same as 'inbhear'?

No: 'deilt' is a delta of land built up from silt with many channels, while 'inbhear' is an estuary, the widening mouth of a river.

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