ceraunomancy

Noun

ceraunomancy (uncountable)

1. (uncommon) Divination by thunder or lightning; the use of thunder or lightning to supernaturally gain information.
   • Indeed as DeMille in 1956 filmed the Decalogue, God inscribes each commandment literally with a bolt of lightning. Because the film functions to read the signs of the times, the practice here invokes ceraunomancy (divination by lightning).2007, Evan Samuel Heimlich, Divination by the Ten Commandments: Its Rhetorics and their Genealogies, page 187
   • Whether or not that is true, the equal weight given to public and private contexts in the sources for Etruscan ceraunomancy certainly does provide a corrective to our literary sources and their preoccupation with public divination whence one might be led to believe that traditional divination was...2016, Kyle Grothoff, Astrology in Augustan Rome: A Cultural History, page 68

   Synonyms:

   ceraunoscopy, brontomancy, brontoscopy

2. (uncommon) The magical or supernatural power of conjuring or controlling thunder or lightning.