American Heritage Dictionary
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Century Dictionary
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WordNet
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This is an arcanum which is brought within the range of the understanding by the doctrine of degrees.— Angelic Wisdom Concerning the Divine Love and the Divine Wisdom
Freemasonry were off-shoots of the original Cabala, and that during the past 150 years new associations had been formed, and the parties who had introduced me into their arcanum were a society in affiliation with many others then in existence in different countries.— Buchanan's Journal of Man, January 1888 Volume 1, Number 12
Arcanum has been looked up 240 times, favorited once, listed 18 times, and commented on twice.

American Heritage Dictionary (1)
Century Dictionary (1)
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