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oct.

  1. octavo.
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Oct.

  1. October.
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oct-

  1. variant of octa- or octo- before a vowel: octal.
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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for oct

Oct

abbreviation for
  1. October
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oct-

combining form
  1. (used before a vowel) a variant of octo-
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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