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arcanum

American  
[ahr-key-nuhm] / ɑrˈkeɪ nəm /

noun

plural

arcana
  1. Often arcana secret or arcane knowledge, acquired or understood by only a few.

    If you enjoy the arcana of early baseball, this book is for you.

  2. a supposed great secret of nature that the alchemists sought to discover.

  3. a secret and powerful remedy; elixir.


arcanum British  
/ ɑːˈkeɪnəm /

noun

  1. (sometimes plural) a profound secret or mystery known only to initiates

  2. a secret of nature sought by alchemists

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of arcanum

First recorded in 1590–1600; from Latin, neuter (used as noun) of arcānus arcane ( def. )

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The point is that they aren’t arcana that’s only known to the most devoted of Boss fans, so the dissonance between what the audience knows and what they’re being told will have an impact.

From Salon

His novels move with kinetic energy, his plots are intricate puzzles shrouded in religious iconography, ancient cryptography and other obscure arcana.

From Los Angeles Times

Among the ultra-blessed 22 cards in the tarot’s major arcana — that is, the cards that have the power to shift the narrative of destiny — we find “The World.”

From Los Angeles Times

It’s a solid if typical entry into the Pavement slacker-rock arcana.

From Los Angeles Times

The 56 minor arcana cards — which mirror the pattern of common playing cards — represent “daily challenges and opportunities.”

From Los Angeles Times