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Is it tex(tech)? Or Is it tex(like touch)?

Lay-TeX? or La-TeX?

Should I use TeX pronunciation in LaTeX?

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see last line in latex-project.org/intro.html –  Herbert May 5 '11 at 19:28
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What about ConTeXt? The final “t” is for “tricky”. –  rberaldo May 5 '11 at 20:08
    
@rberaldo: see tex.stackexchange.com/questions/5406/… –  Caramdir May 5 '11 at 20:29
    
@Caramdir thank you! I think the Hans Hagen should put it in the manual, just for the sake of tradition. –  rberaldo May 5 '11 at 20:40
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5 Answers

up vote 42 down vote accepted

Let the creators of TeX and LaTeX answer:

Donald Knuth wrote in the first chapter of his TeXbook:

English words like ‘technology’ stem from a Greek root beginning with the letters τεχ...; and this same Greek word means art as well as technology. Hence the name TeX, which is an uppercase form of τεχ.

Insiders pronounce the χ of TeX as a Greek chi, not as an ‘x’, so that TeX rhymes with the word blecchhh. It’s the ‘ch’ sound in Scottish words like loch or German words like ach; it’s a Spanish ‘j’ and a Russian ‘kh’. When you say it correctly to your computer, the terminal may become slightly moist.

Leslie Lamport wrote in the first chapter of his book LaTeX: A document Preparation System:

One of the hardest things about LaTeX is deciding how to pronounce it.This is also one of the few things I'm not going to tell you about LaTeX, since pronunciation is best determined by usage, not fiat. TeX is usually pronounced teck, making lah-teck, and lay-teck the logical choices; but language is not always logical, so lay-tecks is also possible.

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a long time ago, in an intro to latex presented at a decus symposium by lamport himself, he said when asked this question, "anything but L.A.TeX". (in other words, don't pronounce the first two letters as separate syllables.) –  barbara beeton May 5 '11 at 20:13
    
Great answer. Another interesting quote by Knuth is mentioned in footnote 1 on page 1 of lshort, I think this quote would add to your answer even more. (I couldn't find the quote in the "German Wikipedia" right away though ...) –  doncherry May 5 '11 at 23:13
    
@doncherry: thanks for the quote. I, however, was unable to find the source in the German Wikipedia, so I decided not to add the quote to my answer until I (or someone else) can find the source. –  Gonzalo Medina May 7 '11 at 2:33
    
One should note, however, that the Greek χ (chi) is pronounced (at least by the very few Greek people I've met) closer to the English word 'he' than to the German 'ach', so I would question whether Knuth's explanation is fully consistent with modern Greek pronunciation. –  Bruno Le Floch May 24 '13 at 9:02
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Using the IPA, it is /ˈleɪtɛk/, /ˈleɪtɛx/, /ˈlɑːtɛx/, or /ˈlɑːtɛk/.

Resources:

Pronouncing "LaTeX" on Wikipedia

LaTeX is usually pronounced /ˈlɑːtɛk/ or /ˈleɪtɛk/ in English (that is, not with the /ks/ pronunciation English speakers normally associate with X, but with a /k/). The characters T, E, X in the name come from capital Greek letters tau, epsilon, and chi, as the name of TeX derives from the Greek: τέχνη (skill, art, technique); for this reason, TeX's creator Donald Knuth promotes a pronunciation of /ˈtɛx/ (tekh) (that is, with a voiceless velar fricative as in Modern Greek, similar to the last sound of the German word "Bach", the Spanish "j" sound, or as ch in loch). Lamport, on the other hand, has said he does not favor or discourage any pronunciation for LaTeX.

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As a linguistics student, I highly appreciate your IPA, to make it even better, you could/should add either slashes /.../ or brackets [...] around it. Your quote went with the slashes, which indicate phonemic transcription. That seems appropriate here. –  doncherry May 5 '11 at 20:42
    
@doncherry Thank you for the suggestion, I have added the slashes. I am actually learning the IPA at the moment as I have become interested in linguistics, particularly phonetics and phonology, so any good advice such as yours is highly appreciated. –  Harold Cavendish May 5 '11 at 21:14
    
Glad I could help. I'm sure you know it already, but in case you don't, you should check out the tipa package for IPA in LaTeX. –  doncherry May 5 '11 at 22:36
    
@doncherry I do, thank you. I am currently working on typesetting a short phrasal dictionary so I use it a lot. –  Harold Cavendish May 6 '11 at 4:54
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I think that it's better to find out what Knuth has to say in the matter... Listen!!! :D

Oh, and watch the whole presentation. It is definitely worth it.

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(pronunciation at 13:40) –  Neil G May 6 '11 at 7:56
    
Thanks for the wonderful link –  Kirk Hammett May 7 '11 at 17:25
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Knuth answers this in the TeXbook: it's "teccch" (a gutteral sound, like in German or Russian or Hebrew, or of course Greek) not "teks" or "tetch". According to the TeX FAQ, there is no official pronunciation for LaTeX, but I often hear "lay-TeX" or (of course) "lay-teks" for humorous reasons. I prefer "lah-TeX", as in "Lamport", but I'm pedantic.

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TeX actually stands for tau-epsilon-chi and the 'X' is therefore pronounced like the 'ch' in German, i.e. by breathing out through half closed mouth (I can't explain it better). It's sounds similar to the 'tech' in 'technique'.

The TeX Wikipedia page says:

TeX (/ˈtɛx/ as in Greek, but often pronounced /tɛk/ in English) ... 'ch' like in 'loch'

LaTeX is pronounced lah-tech by most German speakers (like me) but in English it is often pronounced lay-tech. IMHO that is because it is the natural pronounced of that languages.

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"breathing out through half closed mouse"!!! I'm sure you can't explain it better. –  Loop Space May 5 '11 at 19:38
    
@Andrew: LOL :-) Sorry, long day. ROFL –  Martin Scharrer May 5 '11 at 19:43
    
Reading through Wikipedia's description I wonder, how I can speak at all. Seems way too complicated ;-). –  Caramdir May 5 '11 at 20:41
    
Incidentally, 'LOL' is now in the Oxford English Dictionary. It's a sad day. –  Loop Space May 5 '11 at 20:54
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Martin, which German "ch"? There's Bach and there's Brecht. The different sources seem to be contradicting each other. The above quotes list the Scottish "loch" but on latex-project.org/intro.html the instructions compare it with "Brecht". These are different sounds for the ch, at least for a German speaker. –  teylyn May 5 '11 at 21:06
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