First Known Use: 15th century
Dictionary
arcanum
noun ar·ca·num \är-ˈkā-nəm\
plural ar·ca·na\-nə\
Definition of ARCANUM
1
: mysterious or specialized knowledge, language, or information accessible or possessed only by the initiate —usually used in plural
2
: elixir 1
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Origin of ARCANUM
Latin, from neuter of arcanus secret, from arca chest — more at ark
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