News for hackers. Stuff that matters.
Re:The origin of “log in” (2011) by esquivalience on Wednesday April 30, 2014 @06:50AM (#7672527)
Surprised it hasn't come up in this thread already, but an excellent and free resource for this sort of thing is EtymOnline[0]. It's volunteer-made[1], has an easy search and quick on-results-page answers.

Here's the search page for Log: http://www.etymonline.com/index.php?term=log

[0] http://www.etymonline.com [1] at least mostly - see https://news.ycombinator.com/item?id=2580631

Re:The origin of “log in” (2011) by pbhjpbhj on Wednesday April 30, 2014 @08:47AM (#7672889)
I find http://en.wiktionary.org/wiki/etymology [the talk page for that one is fun] to be pretty good as an adjunct to EtymOnline.