[ForHackernews]

What the heck is "A11y"? I've never heard of that.

[tigeba]

Apparently a non-accessible way of writing Accessibility.

[wmil]

$ grep -c '^a.\{11\}y$' /usr/share/dict/words

< 162

162 results, but I'm going with "aboriginality" skills.

[bmj]

"Accessibility"

Kinda like i18n for "internationalization."

[_asdf_asdf]

...or globalization = g11n

[MAGZine]

Knowing i11n and i18n, I'm fairly sure I could've figured out g11n, since they all share a similiar context.