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octo-

American  
  1. variant of octa-.

    octosyllabic.


octo- British  

combining form

  1. eight

    octosyllabic

    octagon

"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 octo- mean? Octo- is a combining form used like a prefix meaning “eight.” It is used in a great many scientific and technical terms.Octo- comes from te Greek oktṓ, meaning “eight.” The Latin equivalent, which is almost identical in spelling and pronunciation, is octō.What are variants of octo-?When combined with words or word elements that begin with a vowel, octo- becomes oct-, as in octane. Another variant of octo- is octa-, as in octastyle. Want to know more? Check out our Words That Use entries for both oct- and octa-.

Etymology

Origin of octo-

from Latin octo, Greek okto

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.

In September, the company changed its Nasdaq symbol from OCTO.

From Barron's

If you’re a septua-, octo- or nonagenarian by Spotify’s accounting, you may find yourself in hip company.

From The Wall Street Journal

Cyber security researchers at CrowdStrike formed the name "Scattered Spider" because of the group's sporadic nature, but other cyber companies have given the cluster nicknames including Octo Tempest and Muddled Libra.

From BBC

It's not known who is ultimately using the service to attack the retailers, but some security experts say the tactics seen are similar to that of a loosely coordinated group of hackers who have been called Scattered Spider or Octo Tempest.

From BBC

It's not known who is ultimately using the DragonForce service to attack the retailers, but some security experts say the tactics seen are similar to that of a loosely coordinated group of hackers who have been called Scattered Spider or Octo Tempest.

From BBC