arcanum

From Latin arcānum.

• IPA^(key): /ɑɹˈkeɪnəm/, /ɑɹˈkɑːnəm/

arcanum (plural arcana or arcanums)

1. A mystery or deep secret.
2. An elixir or secret remedy.

• arcane

• occult
• tarot

arcānum n (genitive arcānī); second declension

1. secret or mystery

Second-declension noun (neuter).

• arcānus

• English: arcane
• French: arcane
• Italian: arcano
• → Portuguese: arcano
• Romanian: arcan
• Spanish: arcano

• arcanum in Charles du Fresne du Cange’s Glossarium Mediæ et Infimæ Latinitatis (augmented edition with additions by D. P. Carpenterius, Adelungius and others, edited by Léopold Favre, 1883–1887)
• “arcanum”, in William Smith, editor (1854, 1857), A Dictionary of Greek and Roman Geography, volume 1 & 2, London: Walton and Maberly