telescope - definition and synonyms

verb [transitive] 

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/ˈtelɪˌskəʊp/
present tense
I/you/we/theytelescope
he/she/ittelescopes
present participletelescoping
past tensetelescoped
past participletelescoped
  1. to slide a number of things together so that they fill less space
    1. a.
      to make something shorter in length or time

      He telescopes the whole story into 15 minutes.