[koh-heer-uh ns, -her-]
- the act or state of cohering; cohesion.
- logical interconnection; overall sense or understandability.
- congruity; consistency.
- Physics, Optics. (of waves) the state of being coherent.
- Linguistics. the property of unity in a written text or a segment of spoken discourse that stems from the links among its underlying ideas and from the logical organization and development of its thematic content.Compare cohesion(def 4).
Origin of coherence
SynonymsSee more synonyms for coherence on Thesaurus.com
3. correspondence, harmony, agreement, rationality.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for coherency
This search for coherency must not be transferred to the study of real men.Introduction to the Study of History
Charles V. Langlois
There is no consistency which has not once been inconsistent, nor coherency that has not been incoherent.God the Known and God the Unknown
She had even imparted to her, when it came to the issue, something of coherency.Adrienne Toner
Anne Douglas Sedgwick
The Customs Union was invented in 1828 to supply the necessary element of coherency.Invention
Bradley A. Fiske
George managed to get through it with a coherency understandable, but no more.The Carpet from Bagdad
- logical or natural connection or consistency
- another word for cohesion (def. 1)
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
Word Origin and History for coherency
late 16c., from Middle French cohérence (16c.), from Latin cohaerentia, noun of state from cohaerentem (see coherent). Related: Coherency.
Online Etymology Dictionary, © 2010 Douglas Harper
- A property holding for two or more waves or fields when each individual wave or field is in phase with every other one. Lasers, for example, emit almost perfectly coherent light; all the photons emitted by a laser have the same frequency and are in phase. Since quantum states can be described by a wave equation, coherence can hold for quantum states in general, though only among bosons. Coherence is generally possible in physical systems that may undergo superposition. Maintaining coherence of light is important in fiber optic communications. See also Bose-Einstein condensate.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.