[pclmulqdq]

The ironic thing about this language is that it is an attempt to be "inclusive" by introducing weird shibboleths that exclude most people.

I was once informed by someone at a big tech that the reason for these "x[n]y" codes is because these words can be hard to spell for non-native speakers of English. Also, they added "a11y" (accessibility) to the list.

I think the real explanation was that these were introduced because "internationalization" is a long word and file path names used to be limited in the 1980s.