[loh-gos, -gohs, log-os]
(often initial capital letter) Philosophy. the rational principle that governs and develops the universe.
Theology. the divine word or reason incarnate in Jesus Christ. John 1:1–14.

1580–90; < Greek lógos a word, saying, speech, discourse, thought, proportion, ratio, reckoning, akin to légein to choose, gather, recount, tell over, speak; cf. lection

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noun, plural logos.
Also called logotype. a graphic representation or symbol of a company name, trademark, abbreviation, etc., often uniquely designed for ready recognition.
Printing. logotype ( def 1 ).

by shortening of logotype or logogram


noun Computers.
a high-level programming language widely used to teach children how to use computers.

< Greek lógos word (see logos), spelled as if an acronym

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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
logo (ˈləʊɡəʊ, ˈlɒɡ-)
n , pl -os
short for logotype

logos (ˈlɒɡɒs)
philosophy reason or the rational principle expressed in words and things, argument, or justification; esp personified as the source of order in the universe
[C16: from Greek: word, reason, discourse, from legein to speak]

Logos (ˈlɒɡɒs)
Christian theol the divine Word; the second person of the Trinity incarnate in the person of Jesus

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

1937, probably a shortening of logogram "sign or character representing a word" (1840), from Gk. logos "word" + gram "what is written."

1580s, "second person of the Christian Trinity," from Gk. logos "word, speech, discourse," also "reason," from PIE base *leg- "to collect" (with derivatives meaning "to speak," on notion of "to pick out words;" see lecture); used by Neo-Platonists in various metaphysical
and theological senses and picked up by N.T. writers. Other Eng. formations from logos include logolatry "worship of words, unreasonable regard for words or verbal truth" (1810 in Coleridge); logomachy "fighting about words" (1560s); logomania (1870); logophobia (1923).
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Abbreviations & Acronyms
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
Forward-thinking companies are starting to figure out ways to convert their
  logos to tools of engagement.
They can identify several hundred company logos though.
In the fast food condition, these were fast food logos.
For a surprising number of people these productive pursuits involve worrying
  about companies' logos.
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