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Meaning of cryptoporticus

cryp•to•por•ti•cus

Pronunciation: (krip"tu-pôr'ti-kus, -pōr'-), [key]
— pl. -cus.
  1. a covered passage, as one underground, lighted on one side.
  2. a portico at the entrance to a crypt.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.