How do I pronounce “LaTeX”?
This question is more controversial than you might think. We found a whole web page of TeX Frequently Asked Questions. Their comments are: • “Lamport [LaTeX’s creator] never recommended how one should pronounce LaTeX, but a lot of people pronounce it ‘Lay TeX’ or perhaps ‘Lah TeX’ (with TeX pronounced as the program itself; see the rules for TeX). It is definitely not to be pronounced in the same way as the rubber-tree gum.” • (From The Rules for TeX): “The ‘X’ stands for the lower case Greek letter Chi (the upper-case Greek letter doesn’t look in the least like a letter “X”) and is pronounced by English-speakers either a bit like the ‘ch’ in the Scots word ‘loch’ ([x] in the IPA) or like ‘k’. It definitely is not pronounced ‘ks’.