Arcana

//ɑɹˈkeɪnə// noun

Definitions

Noun
  1. 1
    Specialized knowledge that is mysterious to the uninitiated. uncountable

    "Thou deign'st no answer,—or I fain would ask If since thy bright creation, thou hast seen Ought like a Newton, whose admitted eye The arcana of the universe explored Light's subtle ray its mechanism disclosed, The impetuous comet his mysterious lore Unfolded,"

  2. 2
    plural of arcanum form-of, plural

Etymology

Etymology 1

From Latin arcānus (“hidden, secret”), from arcēre (“to withhold”), arca (“a chest”).

Etymology 2

From Latin arcānus (“hidden, secret”), from arcēre (“to withhold”), arca (“a chest”).

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