Up till now, I have been using "i18n" and "i10n" interchangeably to mean localization. Yep - I didn't know that they are numeronyms (I should have known that when I heard about k8s), that l10n starts with a l, or that i18n and l10n actually mean different things.

From Wikipedia:

In i18n, 18 stands for the number of letters between the first i and the last n in the word internationalization.

The same rule also applies to l10n.

Other numeronyms include g11n (globalization), a11y (accessibility), and i14y (interoperability).

Quoting W3C:



Helpful reads:



i18n vs l10n — what’s the diff?

Localization vs. Internationalization
What do the terms ‘internationalization’ and ‘localization’ mean, and how are they related?