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closed interval

noun
  1. maths an interval on the real line including its end points, as [0, 1], the set of reals between and including 0 and 1
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
closed interval in Science

closed interval

  1. A set of numbers consisting of all the numbers between a pair of given numbers and including the endpoints.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.