# xi

| ⅺ | U+217A, &#8570; SMALL ROMAN NUMERAL ELEVEN |
| ← ⅹ [U+2179] | Number Forms | ⅻ → [U+217B] |

## Translingual
### Alternative forms

* XI, xi, Ⅺ, VVI, vvi

### Symbol

xi
* Ⅺ, the Roman numeral eleven (11)

#### See also

* Previous: ⅹ (ten, 10)
* Next: ⅻ (twelve, 12)

## English
### Etymology

From Ancient Greek ξεῖ (xeî), ξῖ (xî).

### Pronunciation

* enPR: zī, sī, ksī, ksē, IPA: /zaɪ/, /saɪ/, /ksaɪ/, /ksiː/
* (nonstandard) IPA: /ʃiː/
* Audio (US):(file)
* Rhymes: -aɪ

### Noun

xi (plural xis)
* The 14th letter of Classical and Modern Greek. The 15th in Ancient and Old Greek.
* (physics) Either of a pair of hyperons having spin 1/2, which decay into a lambda particle and a pion.

#### Derived terms

* xi baryon

#### See also

* (Greek-script letter names) alpha, beta, gamma, delta, epsilon, zeta, eta, theta, iota, kappa, lambda, mu, nu, xi, omicron, pi, rho, sigma, tau, upsilon, phi, chi, psi, omega

### References

* ↑ “xi”, in Merriam-Webster Online Dictionary, Springfield, Mass.: Merriam-Webster, 1996–present. (zaɪ, ksaɪ)
* ↑ “xi”, in Dictionary.com Unabridged, Dictionary.com, LLC, 1995–present. (zaɪ, saɪ, ksi)
* ↑ “xi”, in Collins English Dictionary. (zaɪ, saɪ, ksaɪ, ksi)

### Anagrams

* Ix

## Dutch
### Etymology

From Ancient Greek ξῖ (xî).

### Pronunciation

* IPA: /ksi/
* Audio:(file)

### Noun

xi m or f (plural xi's, diminutive xi'tje n)
* xi (letter of the Greek alphabet)

### Further reading

* xi on the Dutch Wikipedia.Wikipedia $^{nl}$

## French
### Alternative forms

* ksi

### Pronunciation

* IPA: /ksi/
* Audio:(file)

### Noun

xi m (plural xi or xis)
* xi (Greek letter)

### Further reading

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

## Italian
### Alternative forms

* csi, ksi

### Etymology

From Ancient Greek ξεῖ (xeî), ξῖ (xî).

### Pronunciation

* IPA: /ˈksi/
* Rhymes: -i
* Hyphenation: xì

### Noun

xi m or f (invariable)
* the name of the Greek-script letter Ξ/ξ
** xi (all senses)

## Maltese
### Pronunciation

* IPA: /ʃɪ/

### Etymology 1

From Arabic شَيْء (šayʔ, “thing, a thing, something”). Compare the same use as a determiner in Moroccan Arabic شي (ši) and North Levantine Arabic شي (ši).

#### Determiner

xi
* some
    xi mkien ― somewhere
    xi ħadd ― someone
    xi ħaġa ― something
** 2018, Antoinette Borg, Amina, Merlin Publishers, →ISBN:Imnalla għajjatlu Fredu u kellu jwaqqaf l-eloġju ta’ nannuh, għax naħseb l-istorja li kien imiss kienet li għandu xi gżira privata.(please add an English translation of this quotation)
** 1970, Anton Buttigieg, “Il-Pjazza”, in Fl-Arena:Kulħadd jimxi, kollox lajma, jirkeb biss xi sinjur kbir: bini l-għatx u tawni nixrob minn ġos-satal fuq il-bir. (please add an English translation of this quotation)
* any

##### Related terms

* *iex
* -x
* xejn
* x’
* x’inhu

### Etymology 2

See the lemma.

#### Pronoun

xi
* Alternative form of x’ (used before a consonant cluster)

## Mandarin
### Romanization

xi
* Nonstandard spelling of xī.
* Nonstandard spelling of xí.
* Nonstandard spelling of xǐ.
* Nonstandard spelling of xì.

#### Usage notes

* Transcriptions of Mandarin into the Latin script often do not distinguish between the critical tonal differences employed in the Mandarin language, using words such as this one without indication of tone.

## Portuguese
### Pronunciation

* (Brazil) IPA: /ˈʃi/
* (Portugal) IPA: /ˈʃi/
* Rhymes: -i

### Etymology 1
#### Alternative forms

* xii, xiii, etc.

#### Interjection

xi
* indicates that something has failed
* indicates that someone is in trouble

### Etymology 2
#### Noun

xi m (plural xis)
* Alternative spelling of csi

## Spanish
### Pronunciation

* IPA: /ˈsi/ [ˈsi]
* Rhymes: -i
* Syllabification: xi

### Noun

xi f (plural xíes)
* xi; the Greek letter Ξ, ξ

### Further reading

* “xi”, in Diccionario de la lengua española [Dictionary of the Spanish Language] (in Spanish), online version 23.8, Royal Spanish Academy [Spanish: Real Academia Española], 2024 December 10

## Takelma
### Noun

xi
* water

### References

* Victor Golla, Takelma Texts and Grammar

## Vietnamese
### Etymology

Perhaps from French cirage

### Pronunciation

* (Hà Nội) IPA: [si˧˧]
* (Huế) IPA: [sɪj˧˧]
* (Saigon) IPA: [sɪj˧˧]

### Noun

xi
* shoe polish