American Heritage Dictionary
(1)
Century Dictionary
(1)
GNU Webster's 1913
(1)
WordNet
(1)
Elsewhere on the web
The topic is a bit arcane, and takes some explaining to get readers up to speed to appreciate it.— Knight Science Journalism Tracker
Nothing arcane, all above board and, above all else, all-powerful.— Halifax Live
How do you market one of the most ignored institutions in society while incorporating topics both diverse and arcane, esoteric and beloved, academic and entertaining?— Madison.com - top
The Guardian runs approximately eight every Sunday, and this one -- as usual -- is interesting, arcane, and ripe for discussion.— Entertainment Weekly's PopWatch

Bubble size: how much this word was used in a year
Bubble height: used more or less than expected, vs. all uses evenly distributed
You can expect to see this word about twice a month.
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