HeyRua Get the app

Substratum in Irish (Foshraith): Meaning, Pronunciation, Usage

‘foshraith’ also means: substrate

The Irish for substratum is foshraith, a feminine noun (plural foshraitheanna).
Updated October 2026Report a mistake

How to say “substratum” in Irish

Irish:
foshraith
English:
substratum, substrate
Word type:
noun
Gender:
feminine, second declension
Pronunciation:
“FOH-hrah”  /ˈfˠɔˌɾˠahə/
Various forms
Plural:
foshraitheanna (substratums)
Genitive singular:
foshraithe, na foshraithe (e.g. comhdhéanamh na foshraithe, the composition of the substratum)
Genitive plural:
foshraitheanna, na bhfoshraitheanna (e.g. anailís na bhfoshraitheanna, the analysis of the substrata)

What does “foshraith” mean?

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

substratum
An underlying layer or foundation beneath something else, literally or figuratively.Also: substrate, underlying layer, sublayer.
1 other meaning: substrate
2substrate
In science, the base material or surface on which something grows or acts.Also: base material, growing medium.

“Foshraith” with the article

The plural of substratum in Irish is foshraitheanna. Here is foshraith after the article (an t-alt), in the singular and the plural.

an fhoshraith
the substratum
Lenition: f becomes fh after an (feminine noun)
na foshraitheanna
the substratums
Plural: no change after na

“Foshraith” in a sentence: Irish examples

Common Irish sentences using foshraith, the Irish word for substratum.

Tá foshraith chloiche faoin ithir seo.
There is a stony substratum under this soil.
Rinne na geolaithe staidéar ar an bhfoshraith.
The geologists studied the substratum.
Is gaineamh atá san fhoshraith anseo.
The substratum here is sand.
Bhí dath na foshraithe dorcha.
The colour of the substratum was dark.
Fásann an caonach ar fhoshraitheanna éagsúla.
The moss grows on various substrates.
Tá foshraith Cheilteach sa teanga sin, dar leo.
They say that language has a Celtic substratum.
Roghnaigh foshraith oiriúnach do na síolta.
Choose a suitable substrate for the seeds.

Other nouns in Irish

More everyday Irish nouns to learn next.

Substratum in Irish: frequently asked questions

What is the Irish for substratum?

The Irish for substratum is foshraith (pronounced “FOH-hrah”). It’s a feminine noun and the plural is foshraitheanna. Depending on context it can also mean substrate.

How do you pronounce foshraith in Irish?

Foshraith is said like “FOH-hrah” (IPA /ˈfˠɔˌɾˠahə/).

What is the plural of substratum in Irish?

The plural of foshraith is foshraitheanna; with the article, na foshraitheanna means “the substratums”. The genitive plural is foshraitheanna, as in anailís na bhfoshraitheanna (the analysis of the substrata).

Does foshraith have more than one meaning?

Yes. Foshraith can mean substratum or substrate, depending on context; the first is the most common.

Why does foshraith change to fhoshraith or bhfoshraith?

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

How is 'foshraith' formed?

It combines the prefix 'fo-' (under, sub-) with 'sraith' (layer, series), giving 'underlayer', with lenition of the s.

Learn Irish by
actually speaking it

Learn everyday Irish words like foshraith through guided conversation with Rua.

7-day free trial. Cancel anytime.

The HeyRua app home screen