An-Prele was a concept known to the Vulcan civilization, a training of concentration and mental discipline.
History and specifics[]
An-Prele was typically conducted between the age of sixteen and nineteen Vulcan years, where the subject was to learn pain control meditations through the help of an Adept.
Sarda of the Lyr Zor clan was expected to have had completed his An-Prele training during the time he became an adult. (TOS - Fortunes of War novel: Battlestations!)