a. [ L. Pierius, from Mount Pierus, in Thessaly, sacred to the Muses. ] Of or pertaining to Pierides or Muses. [ 1913 Webster ]
Drink deep, or taste not the Pierian spring. Pope. [ 1913 Webster ]
{ } a. Of, pertaining to, or discovered by, Napier, or Naper. [ 1913 Webster ]
Naperian logarithms. See under Logarithms. [ 1913 Webster ]