ar·ca·num /ɑrˈkenəm/
祕密,奧祕,秘藥
Ar·ca·num n.; pl. Arcana
1. A secret; a mystery; -- generally used in the plural.
Inquiries into the arcana of the Godhead. --Warburton.
2. Med. A secret remedy; an elixir.
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arcanum
n : information known only to a special group; "the secret of
Cajun cooking" [syn: secret]
[also: arcana (pl)]