| Perio | happening or recurring at regular intervals |
|---|---|
| Perio | recurring at regular intervals |
| Perio | any oxygen-containing acid of iodine |
| Perio | irregular breathing of newborns |
| Perio | abnormal respiration in which periods of shallow and deep breathing alternate |
| Perio | an event that recurs at intervals |
| Perio | (chemistry) the principle that chemical properties of the elements are periodic functions of their atomic numbers |
| Perio | a complex sentence in which the main clause comes last and is preceded by the subordinate clause |
| Perio | a tabular arrangement of the chemical elements according to atomic number as based on the periodic law |
| Perio | a publication that appears at fixed intervals |
| Perio | happening or recurring at regular intervals |
| Perio | North American cicada |