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oct-

1 American  
  1. variant of octa- or octo- before a vowel.

    octal.


oct. 2 American  

abbreviation

  1. octavo.


Oct. 3 American  

abbreviation

  1. October.


Oct 1 British  

abbreviation

  1. October

"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

oct- 2 British  

combining form

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

"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

Usage

What does oct- mean? Oct- is a combining form used like a prefix meaning “eight.” It is used in a great many scientific and technical terms.Octo- comes from the Greek oktṓ, meaning “eight.” The Latin equivalent, which is almost identical in spelling and pronunciation, is octō.What are variants of oct-?Oct- is a variant of octa- or octo-, which loses its -a- or -o- when combined with words or word elements beginning with vowels.Want to know more? Check out our Words That Use entries for both octa- and octo-.

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Since then, Bitcoin has dropped from $111,612 as of Oct.

From The Wall Street Journal

The data were originally scheduled for Oct.

From Barron's

The recall was implemented after a JetBlue Airways flight from Cancun to Newark dropped in midair on Oct.

From Los Angeles Times

The share of advancing stocks, or breadth, had started to taper off even before the S&P 500 hit its Oct.

From MarketWatch

But he has held together a fractious coalition throughout the war with Hamas and has remained steady in the polls after a deep drop following the Oct.

From The Wall Street Journal