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EO

1 American  
  1. executive order.


eo- 2 American  
  1. a combining form meaning “early,” “primeval,” used in the formation of compound words.

    Eocene; eohippus.


e.o. 3 American  

abbreviation

  1. ex officio.


e.o. 1 British  

abbreviation

  1. ex officio

"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

eo- 2 British  

combining form

  1. early or primeval

    Eocene

    eohippus

"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

Etymology

Origin of eo-

< Greek, combining form of ēṓs ( Attic héōs ) dawn; akin to east, Aurora

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.

At Oc Eo, an important trading port near Co Loa, Roman coins dating from the reign of Marcus Aurelius have been discovered, suggesting that European merchants may have traveled as far as Southeast Asia in search of rare luxuries such as Chinese silk.

From The Wall Street Journal

EO: I wake up, turn on my sauna, get the cold plunge going, and then I go hit the water pot and decide whether I want to have coffee or tea.

From Los Angeles Times

EO: Most of the time, I document it for myself.

From Los Angeles Times

EO: Whenever I travel, everybody always brings up Hollywood.

From Los Angeles Times

EO: I was thinking about it the other day for the first time, believe it or not.

From Los Angeles Times