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