Adherence to (compliance with) drug treatment is important. However, only about half the people who leave a doctor's office with a prescription take the drug as directed. Among the many reasons people give for not adhering to drug treatment, forgetfulness is the most common.
Definition of periodical. 1  1 : periodic 1. 2  2a : published with a fixed interval between the issues or numbersb : published in, characteristic of, or connected with a periodical.
Here are all the possible meanings and translations of the word Quarterly. Princeton's WordNet(4.50 / 2 votes)Rate this definition: quarterly(adj) a periodical that is published every quarter (or four issues per year) quarterly(adverb) of or relating to or consisting of a quarter.