Talk:Chi (letter)

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Any reason this is at Chi (Greek letter) rather than Chi (letter) (which is just a redirect to here), unlike every other Greek letter? Assuming no objections, I'd like to move it for consistency's sake. -- DrBob 18:04, 2 September 2005 (UTC)

  • None I can see. Support move. Septentrionalis 22:31, 6 September 2005 (UTC)

This article has been renamed after the result of a move request. Dragons flight 04:49, 15 September 2005 (UTC)

Pronunciation - something is wrong here[edit]

Now what is the correct consonantal sound? --Abdull 17:29, 2 June 2006 (UTC)

I believe there's variation in German, and perhaps also in Greek, between [x] and [χ], depending on dialect. --Ptcamn 17:48, 2 June 2006 (UTC)


isn't X (Chi) used in XoXoXo (-> Kiss Kiss Kiss) ? (not a rhetorical question, I'm French) -- 10:00, 30 June 2006 (UTC+2) It's not really the point... Wikisquared 10:23, 2 September 2006 (UTC)

Yes, kissing the sign of the Cross when swearing an oath, or 'signing' your name if you can't write. Now thought to be an ex. Worthwhile adding. kwami (talk) 10:00, 27 November 2007 (UTC)
Should be added to Hugs and kisses as well iff there's a good source. X please, we're French.-- (talk) 08:22, 14 April 2010 (UTC)

Also, in chemistry isn't lower case chi used to denote "mole fraction?" It would seem appropriate this be included in the article. In a chemistry book I have on hand, ISBN-13:978-0-547-16817-3 on page 510 it describes Raoult's Law, which includes mole fraction. Though it may appear to be a fancy looking "X," it is in fact, lower case chi. I think an update would be in order. —Preceding unsigned comment added by (talk) 04:42, 8 January 2011 (UTC)



It was introduced as a variant of Phoenician 𐤎 (samekh).

No source, and the writer may have gotten confused with the use of either Ξ or Χ for /ks/ in different Greek dialects. (I have heard the idea that both qoppa and phi derived from Ph. /q/, when Archaic Greek /kʷʰ/ split into /kʷʰ/ and , but not this.) kwami (talk) 09:58, 27 November 2007 (UTC)

I think that Chi (/kʰ/, later /x/ in Eastern Greek, /ks/ in Western Greek) may be variation of Phoenician Kaph (/k/ or /x/), together with Kappa (/k/) because they are smilar in both pronunciation and shape. Бошко Рињац (talk) 12:40, 8 August 2010 (UTC)

Semi Protection ?![edit]

What sort of vandalism could possibly result in the semi-protection of as dry a subject as a greek letter :D ??

Exactly my thought. -- (talk) 11:57, 10 March 2014 (UTC)
I presume you are fortunate enough not to be familiar with American "Greek" organizations? (talk) 11:45, 12 December 2014 (UTC)


In electromagnetism Chi is used to represent the electric and magnetic susceptibility of a material. This should probably be added to the Math and Science section of the article. I'm not sure of the procedures for editing a protected page so I apologize if this isn't the right place to mention this. Jtst4 (talk) 21:28, 10 August 2017 (UTC)