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Octave in Irish (Ochtáibh): Meaning, Pronunciation, Usage

The Irish for octave is ochtáibh, a feminine noun (plural ochtáibhí).
Updated October 2026Report a mistake

How to say “octave” in Irish

Irish:
ochtáibh
English:
octave
Word type:
noun
Gender:
feminine
Pronunciation:
“OKH-taw-iv”  /ˈɔxtˠaːvʲ/
Various forms
Plural:
ochtáibhí (octaves)
Genitive singular:
ochtáibhe, na hochtáibhe (e.g. nótaí na hochtáibhe, the notes of the octave)
Genitive plural:
ochtáibhí, na n-ochtáibhí (e.g. raon na n-ochtáibhí, the range of the octaves)

What does “ochtáibh” mean?

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

octave
In music, the interval of eight notes between one note and the next note of the same name, higher or lower.Also: musical octave, eight notes.
1 other meaning:
2octave
In church usage, the eight days following a major feast, or the eighth day after it.Also: octave of a feast, eight days.

“Ochtáibh” with the article

The plural of octave in Irish is ochtáibhí. Here is ochtáibh after the article (an t-alt), in the singular and the plural.

an ochtáibh
the octave
No change: feminine nouns starting with a vowel keep their form after an
na hochtáibhí
the octaves
Plural: na adds h before a vowel

“Ochtáibh” in a sentence: Irish examples

Common Irish sentences using ochtáibh, the Irish word for octave.

Tá ochtáibh idir an dá nóta sin.
There is an octave between those two notes.
Sheinn sí an fonn ochtáibh níos airde.
She played the tune an octave higher.
Tá ocht nóta san ochtáibh.
There are eight notes in the octave.
Tá raon trí ochtáibh ag an amhránaí sin.
That singer has a range of three octaves.
Thosaigh an múinteoir ag barr na hochtáibhe.
The teacher started at the top of the octave.
Ní féidir liom an ochtáibh a shroicheadh le mo lámh.
I can't reach the octave with my hand.
Canann na fir ochtáibh faoi na mná.
The men sing an octave below the women.

Other nouns in Irish

More everyday Irish nouns to learn next.

Octave in Irish: frequently asked questions

What is the Irish for octave?

The Irish for octave is ochtáibh (pronounced “OKH-taw-iv”). It’s a feminine noun and the plural is ochtáibhí.

How do you pronounce ochtáibh in Irish?

Ochtáibh is said like “OKH-taw-iv” (IPA /ˈɔxtˠaːvʲ/).

What is the plural of octave in Irish?

The plural of ochtáibh is ochtáibhí; with the article, na hochtáibhí means “the octaves”. The genitive plural is ochtáibhí, as in raon na n-ochtáibhí (the range of the octaves).

Why does ochtáibh sometimes have a t or h in front of it?

Irish nouns beginning with a vowel take a prefix after certain words: an ochtáibh (the octave), a hochtáibh (her octave), a n-ochtáibh (their octave), na hochtáibhí (the octaves).

Is 'ochtáibh' related to the number eight?

Yes, like English 'octave' it comes from the idea of eight, compare 'ocht' (eight): an octave spans eight notes of the scale.

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