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EO

1.
executive order.

eo-

1.
a combining form meaning “early,” “primeval,” used in the formation of compound words:
Eocene; eohippus.
Origin
< Greek, combining form of ēṓs (Attic héōs) dawn; akin to east, Aurora

e.o.

1.
ex officio.

eo ipso

[ey-oh ip-soh; English ee-oh ip-soh] /ˈeɪ oʊ ˈɪp soʊ; English ˈi oʊ ˈɪp soʊ/
Latin.
1.
by that very fact.

eo nomine

[ey-oh noh-mi-ne; English ee-oh nom-i-nee] /ˈeɪ oʊ ˈnoʊ mɪˌnɛ; English ˈi oʊ ˈnɒm ɪ ni/
Latin.
1.
by that name.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for EO

eo-

combining form
1.
early or primeval: Eocene, eohippus
Word Origin
from Greek, from ēōs dawn

e.o.

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
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Word Origin and History for EO

eo-

word-forming element used from mid-19c. (first in Eocene) in compound words formed by earth-scientists and meaning "characterized by the earliest appearance of," from Greek eos "dawn," from PIE *aus-, cognate with Modern English east (q.v.). Piltdown Man, before exposed as a fraud, was known as Eoanthropus.

Online Etymology Dictionary, © 2010 Douglas Harper
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Related Abbreviations for EO

eo

Esperanto

EO

  1. ethylene oxide
  2. executive order

e.o.

Latin ex officio (by virtue of office)
The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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