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pop-up

noun

  1. Baseball pop ()
  2. Comput. a window, containing a message or menu, that appears superimposed over the window in use, often, specif., one containing an advertisement from the Web

adjective

of or designating a book designed so that cut-out portions of an illustration lift when the book is opened to its page, producing a three-dimensional effect

See pop-up in American Heritage Dictionary 4

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