from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Known or understood by only a few: arcane economic theories. See Synonyms at mysterious.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Understood by only a few; obscure; requiring secret or mysterious knowledge.
from the GNU version of the Collaborative International Dictionary of English
- adj. Hidden; secret.
from The Century Dictionary and Cyclopedia
- Hidden; secret.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adj. requiring secret or mysterious knowledge
Latin arcānus, secret, from arca, chest.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Latin arcanus ("hidden, secret"), from arcere ("to shut up"), arca ("a chest"). (Wiktionary)