Talk:Xi (letter)

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Xi, the VLSI story[edit]

Anyone know what Xi has to do with Very Large Scale Integration (VLSI) or circuit design? It looks like a language for VLSI design. Fill this in if you know.

Origin of name Xi[edit]

How did the name xi originate?? Georgia guy 22:31, 18 February 2006 (UTC)

Because... uh... it stands for the sound [ks]? If you're looking for a deeper meaning than that, you're going to be disappointed. Though actually, it's a vaguely sensible question, as xi (unlike, say, alpha, beta, gamma, delta (letter)...) isn't named for the Phonecian letter it came from, probably because the Phonecian samekh represents a different sound, namely [s]. It's also probably because it was a slightly later development. 00:04, 11 April 2006 (UTC)
Well, sigma got its name from samekh. So why did the Greeks make this letter out of samekh and sigma out of shin?? Georgia guy 01:12, 12 April 2006 (UTC)
short answer: nobody knows. "The problem of the sibilants is created by the existence of too many s sounds in Phoenician and too few in Greek" (Barry Powell, Homer and the Origin of the Greek Alphabet, 46). See Jeffery, The Local Scripts of Archaic Greece p. 32, for one hypothesis (Phoenician Samekh and Shin got mixed up with each other so that the Greeks called Ξ "kshi(n)" and Σ "Samekh", and also coincidentally they mixed up Tsade and Zayin). -leigh (φθόγγος) 02:57, 8 May 2006 (UTC)
Well, the Greek borrowing of zayin is zeta, which was a new name made in imitation of eta and theta, not a name that indicates it was mixed-up with another letter. Georgia guy 23:11, 30 May 2006 (UTC)
Try this article. (Over nine years later, but an answer is better than none, right?) Double sharp (talk) 09:46, 24 September 2015 (UTC)


Can someone please add a sound clip of the 'proper' greek pronunciation, as a (native) english speaker i find this very hard to pronounce from ksi.

You also don't wit the differense between i and I. The letter|staffr csi in Latin is csee in English. Forget the Thewdish k, which should be ah aspirant. -lysdexia 21:19, 21 July 2007 (UTC)

I'll add my name to the list of anglophones hoping for a sound clip. --WanderingHermit 01:08, 4 August 2007 (UTC)

Two points:
  • the pronounciation guide is (presumably) IPA. I can follow it, but it may be better to have a link in the article.
  • currently there's a note about "US English speakers". I am rewording this to de-emphasise their importance. I assume that "American English speakers" is intended, so I will change this.
—DIV ( (talk) 07:25, 17 November 2007 (UTC))

Could we change the guide on pronunciation to include clear indications of the system being used as a guide (for example "IPA:/kʰai/ like the English "kite"). The phonetic English transcriptions are particularly confusing without examples. (talk) 13:09, 24 May 2009 (UTC)

The /ksi/ pronunciation in IPA is like the words "ox eel", run into one word and with the "o" and "l" missed off. I'm not convinced by the stated "usual" English pronunciation of /saɪ/ (like "sigh"), which is exactly the same as the "usual" pronunciation for psi quoted in that article. Working in mathematics, I've only ever heard it pronounced as /ksaɪ/ (like "ox eye" run together and without the "o"), with psi being pronounced either /psaɪ/ or /saɪ/. Dricherby (talk) 11:50, 16 May 2010 (UTC)

Layout problem in Opera[edit]

I'm viewing this article in Opera in Linux, and the "The lower-case letter ξ is used as a symbol for..." section overlaps the "A joined variant of Ξ." image. I've tried several things to get this to stop, but haven't had success.   –Justin Force 15:42, 12 October 2007 (UTC)

I'm using Opera in Windows and I'm not having that problem. It might not be an Opera issue, or it could be your Opera settings.


ξ・∀・) —Preceding unsigned comment added by (talk) 20:18, 30 August 2008 (UTC)

Get out of here, Marupo! No one wants your Touhou memes in Wikipedia. —Preceding unsigned comment added by (talk) 02:20, 30 September 2008 (UTC)

ξ☢ ゚ ヮ゚) (talk) 02:42, 26 October 2008 (UTC)


So someone moved the page without a discussion. I think it should be (letter) since that is what Xi is. I tried to move it, but it said an administrator needs to. Any thoughts? Grk1011/Stephen (talk) 03:21, 5 December 2008 (UTC)

equivalence sign[edit]

I guess that character is missing from my font. —Tamfang (talk) 02:55, 15 July 2009 (UTC)

Damping ratio[edit]

I've previously removed the damping ratio (factor) usage for this letter - but it's come back. I can't find any reference where this quantity is not represented by the letter zeta. These letters can look similar, so it may be just a mistake. Unless some reference can be found for this, I shall re-remove it at some point. --catslash (talk) 10:14, 24 September 2009 (UTC)


Is it proper to capitalize names of letters of alphabets? (Is it "Xi" or is it "xi"?) Robert K S (talk) 17:18, 6 December 2009 (UTC)

Development of glyph[edit]

The origins of the letter need to be covered. ᛭ LokiClock (talk) 16:10, 29 August 2010 (UTC)

Edit request from Jeffdgr8, 20 October 2010[edit]

{{edit semi-protected}} Please change "/ˈsaɪ/" to "/ˈksaɪ/" as this should be the proper pronunciation in English. The pronunciation as it is now is for the letter Psi. Source: English pronunciation of Greek letters.

Jeffdgr8 (talk) 22:43, 20 October 2010 (UTC)

Not done: please provide reliable sources that support the change you want to be made. The current pronunciation (/ˈsaɪ/) is how it is in the dictionary. Thanks, Stickee (talk) 01:22, 21 October 2010 (UTC)

{{edit semi-protected}} The source referenced within English pronunciation of Greek letters that states otherwise is Also In any case the two pages do not agree.

Jeffdgr8 (talk) 17:13, 21 October 2010 (UTC)

Not done: Those two sources shouldn't be used for English pronunciation; one is in Portuguese and comes from a user directory of a Brazilian university(?) and the other concerns the Greek pronunciation. An English dictionary is a better source for the pronunciation in English. Celestra (talk) 16:42, 24 October 2010 (UTC)

Actually, the second link gives both Greek and English pronunciation for each letter. But as you say, it's not really a good source. — Eru·tuon 20:05, 24 October 2010 (UTC)

Edit request from Mapppum, 2 October 2011[edit]

There is a use of lowercase xi not in the list, which is the Wadsworth Constant. This is a popular meme created by Reddit users which has already grown to widespread use. It was created on this thread. Mapppum (talk) 03:18, 2 October 2011 (UTC)

Not done: No. Stop trying every means possible to get this non-notable idea into Wikipedia. After it's written up in a newspaper article or academic journal, come back and see us again. Qwyrxian (talk) 01:32, 3 October 2011 (UTC)

Add Greek Name[edit]

Most of the other greek letters have a section like "(uppercase Η, lowercase η; Greek: Ήτα Ēta)". It would be nice to have similar one here including the Greek name for the letter. — Preceding unsigned comment added by Maliberty (talkcontribs) 18:07, 6 November 2013 (UTC)

Alternative stylization with vertical bar[edit]

In modern Greece, xi is often written with a vertical bar down the middle from top to bottom, so perhaps that should be mentioned in this article. — Preceding unsigned comment added by (talk) 20:57, 14 April 2016 (UTC)

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