er·go

[ur-goh, er-goh]
conjunction, adverb

Origin:
1350–1400; < Latin

Dictionary.com Unabridged

ergo-

1
a combining form meaning “work”: ergograph.
Also, especially before a vowel, erg-.


Origin:
combining form representing Greek érgon

00:10
Ergo is always a great word to know.
So is interrobang. Does it mean:
a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question.
a chattering or flighty, light-headed person.

ergo-

2
a combining form of ergot: ergotoxine.

Origin:
< French

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
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Collins
World English Dictionary
ergo1 (ˈɜːɡəʊ) [Click for IPA pronunciation guide]
 
sentence connector
therefore; hence
 
[C14: from Latin: therefore]

ergo2 (ˈɜːɡəʊ) [Click for IPA pronunciation guide]
 
n
informal short for ergometer

Collins English Dictionary - Complete & Unabridged 10th Edition
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Etymonline
Word Origin & History

ergo
c.1400, from L. ergo "therefore," possibly from *ex rogo "from the direction," from ex "out of" + root of regere "to guide" (see regal).
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

ergo- pref.
Work: ergometer.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Cultural Dictionary
ergo [(er-goh, ur-goh)]

Latin word meaning “therefore”; usually used to show a logical conclusion: “Birds are warm-blooded animals, and reptiles are cold-blooded animals; ergo, no bird is a reptile.”

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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American Heritage
Abbreviations & Acronyms
ERGO
Euthanasia Research and Guidance Organization
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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Example sentences
Ergo, he seems to be inflating his size and power through the art of illusion.
Ergo: people who direct dissertations need to have name recognition.
Ergo, no need for politically responsible decision makers.
Ergo, these judgments are really armchair speculation by untrained individuals.
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