also: テック
noun
TeX (typesetting system)
Refers specifically to the TeX typesetting system created by Donald Knuth. Used in computing contexts.
この論文はＴｅＸで組版されています。
This paper is typeset using TeX.
ＴｅＸのマクロを勉強しています。
I'm studying TeX macros.
LaTeX is a popular macro package built on top of TeX, providing higher-level commands for document preparation.
From the name of the TeX typesetting system, coined by Donald Knuth from the Greek τέχνη (techne, 'art'/'craft'). The Japanese reading テフ reflects the original intended pronunciation.