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n. - A line that when crossed permits of no return and typically results in irrevocable commitment; The boundary in ancient times between Italy and Gaul.

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Usage examples (37)
  • 'Rubicon' -- AMC's march to quality TV continues drama on television this summer.
  • South of it flowed a little stream called the Rubicon, which formed his border-line.
  • Fortress said it was selling Rubicon to an entity called Rubicon Acquisition Co. LLC.
  • The Rubicon is a co-producer of the production along with TheatreWorks and the Cincinnati Playhouse.
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The Open Dictionary of English is a collaborative project, based on Open Source materials, LearnThat resources, and partner APIs.
We give special thanks to our LearnThat volunteers, as well as Princeton University and Wiktionary for their Open Source word data. We're also grateful for the support given by Google, Wordnik.com, Dictionary.com, Stands4.com and YouTube, OEDILF.com, Kylescholz.com, Best-Practice.com, Forvo.com, as well as the generous Creative Commons community.