Meaning of arcanum arcanorum*

ar•ca•num ar•ca•no•rum

Pronunciation: (är-kä'noom är"kä-nō'room Eng. är-kā'n&schwam är"k&schwa-nôr'&schwam, -nōr'-), [key]
— Latin. Latin.
  1. secret of secrets.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.