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A POTD is an acronym for "Photo of the Day", "Picture of the Day", "Post of the Day" or "Poll of the Day". It is a term most commonly used by online digital photography communities as an honor to outstanding photos that are selected daily from among that community's membership. They can either be tagged as POTD or displayed in a special page on that site...

A dormitory, often shortened to dorm, in the United States is a residence hall consisting of sleeping quarters or entire buildings primarily providing sleeping and residential quarters for large numbers of people, often boarding school, college or university students. In the UK, the word has an earlier, different but related meaning: it refers specifically to an individual room in which many people sleep, typically at a boarding school...