# seiche
## English
### Etymology

From Swiss French seiche, perhaps from German Seiche (“sinking”).

### Pronunciation

* (UK) IPA: /seɪʃ/
* (US) IPA: /seɪʃ/, /sit͡ʃ/
* Audio (US):(file), Audio (US):(file)
* Rhymes: -eɪʃ

### Noun

seiche (plural seiches)
* (hydrology) A short-term standing wave oscillation of the water level in a lake, or other confined body of water such as a fjord, characteristic of its geometry.
** 2024 A rockslide-generated tsunami in a Greenland fjord rang Earth for 9 days. Science 2024 Vol 385, DOI: 10.1126/science.adm9247
    In September 2023, we detected the start of a 9-day-long, global . . . very-long-period seismic signal, originating from East Greenland. . . .this event started with a glacial thinning-induced rock-ice avalanche of 25 million cubic meters plunging into Dickson Fjord, triggering a 200-meter-high tsunami. Simulations show that the tsunami stabilized into a 7-meter-high long-duration seiche with a frequency. . .and slow amplitude decay that were nearly identical to the seismic signal. An oscillating, fjord-transverse single force . . . reproduced the seismic amplitudes and their radiation pattern relative to the fjord, demonstrating how a seiche directly caused the 9-day-long seismic signal.

#### Translations
### Anagrams

* Eiches

## French
### Pronunciation

* IPA: /sɛʃ/
* Rhymes: -ɛʃ
* Homophones: seiches, sèche, sèches, sèchent, Seix

### Etymology 1

From Latin sēpia, from Ancient Greek σηπία (sēpía).

#### Noun

seiche f (plural seiches)
* cuttlefish

### Etymology 2

From Swiss French, of uncertain origin. Possibly from German.

#### Noun

seiche f (plural seiches)
* (hydrology) seiche

### Further reading

* “seiche”, in Trésor de la langue française informatisé [Digitized Treasury of the French Language], 2012.

### Anagrams

* chiées

## Irish
### Pronunciation

* (Ulster) IPA: /ˈʃɛçə/, [ˈʃɛi̯çə]

### Noun

seiche f (genitive singular seiche, nominative plural seichí)
* Ulster form of seithe (“skin, hide”)

#### Declension

bare forms
singular
plural
nominative
seiche
seichí
vocative
a sheiche
a sheichí
genitive
seiche
seichí
dative
seiche
seichí
forms with the definite article
singular
plural
nominative
an tseiche
na seichí
genitive
na seiche
na seichí
dative
leis an tseiche don tseiche
leis na seichí :

### Mutation

Note: Certain mutated forms of some words can never occur in standard Modern Irish. All possible mutated forms are displayed for convenience.

### References

* ↑ Quiggin, E. C. (1906) A Dialect of Donegal, Cambridge University Press, § 161, page 62

## Middle Irish
### Etymology

From Proto-Celtic *sekess, from Proto-Indo-European *sek- (“to cut”) (compare Icelandic sigg (“callus, hard skin”)).

### Pronunciation

* IPA: /ˈɕexʲə/

### Noun

seiche f
* skin (of animal), hide

#### Descendants

* Irish: seithe, seiche

### Mutation

Note: Certain mutated forms of some words can never occur in Middle Irish. All possible mutated forms are displayed for convenience.

### References

* ↑ Matasović, Ranko (2009) “*sex-skā/i-”, in Etymological Dictionary of Proto-Celtic (Leiden Indo-European Etymological Dictionary Series; 9), Leiden: Brill, →ISBN, page 331

### Further reading

* Gregory Toner, Sharon Arbuthnot, Máire Ní Mhaonaigh, Marie-Luise Theuerkauf, Dagmar Wodtko, editors (2019), “1 seiche, seithe”, in eDIL: Electronic Dictionary of the Irish Language

## Norman
### Etymology

From Latin sēpia, from Ancient Greek σηπία (sēpía).

### Noun

seiche f (plural seiches)
* (Jersey) cuttlefish

## Scottish Gaelic
### Pronunciation

* IPA: /ˈʃeçə/

### Noun

seiche f (genitive singular seiche, plural seichean or seicheannan)
* hide, skin, pelt (animal)

### Mutation

Note: Certain mutated forms of some words can never occur in standard Scottish Gaelic. All possible mutated forms are displayed for convenience.