From Latin periplūs (“account of a voyage”) and Ancient Greek περίπλους (períplous, “voyage, naval manouver, account of a voyage”), from περί (perí, “peri-: around”) + πλοῦς (ploûs, “voyage”), from πλεῖν (pleîn, “to swim”). Cf. French périple, Spanish periplo, & Italian periplo.