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  1. vastness; enormous extent: the immensity of the Roman empire.
  2. the state or condition of being immense.
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Origin of immensity

First recorded in 1400–50; late Middle English word from Latin word immēnsitās. See immense, -ity
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for immensity


noun plural -ties
  1. the state or quality of being immense; vastness; enormity
  2. enormous expanse, distance, or volumethe immensity of space
  3. informal a huge amountan immensity of wealth
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for immensity


mid-15c., from Middle French immensité (14c.) or directly from Latin immensitatem (nominative immensitas) "immeasurableness," noun of quality from immensus (see immense).

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Online Etymology Dictionary, © 2010 Douglas Harper