James Gleick on being cited in the OED.
It's the title of the writing in the link.
I want to know what 'on' means exactly in the sentence.
I think, according to context, it is used to express 'an occasion' when the word he used was registered in OED, but my friend insists differently that in this case it seems to mean similar to 'about' or 'regarding'.
However, I think it means more similar to 'on' as in this sentence, "On arriving at home, my dog ran out to greet me vigorously", or it could mean both all at once.