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a publication, especially about a technical subject, that is produced regularly
A periodical is a publication that is issued regularly at fixed intervals, such as daily, weekly, monthly, or annually. It includes newspapers, magazines, journals, and newsletters, which provide news, articles, features, and other content on a variety of subjects. Periodicals are often focused on specific topics, such as current events, culture, science, or business, and are intended to keep readers updated with ongoing developments or trends. They are different from books in that they are published in multiple issues over time, with each issue containing new material.
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