+++Placeholder+++
noun
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mathematics, logic
a symbol used in a logical or mathematical expression to represent another term or quantity that is not yet specified but may occupy that place later
a section of text that is placed in a document, etc temporarily until the final text is inserted there at a later stage
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business
someone who occupies a position on behalf of someone else, such as a deputy during the absence of the superior officer
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government
someone who holds an official or government post, esp a post that is given as a reward for supporting the group now in power, rather than on merit
https://www.collinsdictionary.com/dictionary/english/placeholder