Definition of

Arcane

  1. (adj, all) requiring secret or mysterious knowledge

via WordNet, Princeton University

Origin of the word Arcane

  1. 1540s, from L. arcanus "secret, hidden," from arcere "close up, enclose, contain," from arca "chest, box," from PIE *ark- "to hold, contain, guard" (cf. Gk. arkos "defense," arkein "to ward off;" Arm. argel "obstacle;" Lith. raktas "key," rakinti "to shut, lock"). more

via Online Etymology Dictionary, ©2001 Douglas Harper

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