Category:Arcanum

Ar*ca"num, n.; pl. Arcana. Etym: [L., fr. arcanus closed, secret, fr. arca chest, box, fr. arcere to inclose. See Ark.]

1. A secret; a mystery; -- generally used in the plural. Inquiries into the arcana of the Godhead. Warburton.

2. (Med.)

Defn: A secret remedy; an elixir. Dunglison.