coherence

[ koh-heer-uhns, -her- ]
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noun
  1. the act or state of cohering; cohesion.

  2. logical interconnection; overall sense or understandability.

  1. congruity; consistency.

  2. Physics, Optics. (of waves) the state of being coherent.

  3. 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

1
First recorded in 1570–80; coher(ent) + -ence
  • Also co·her·en·cy .

Other words for coherence

Other words from coherence

  • non·co·her·ence, noun
  • non·co·her·en·cy, noun

Words Nearby coherence

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024

How to use coherence in a sentence

British Dictionary definitions for coherence

coherence

coherency (kəʊˈhɪərənsɪ)

/ (kəʊˈhɪərəns) /


noun
  1. logical or natural connection or consistency

  2. 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

Scientific definitions for coherence

coherence

[ kō-hîrəns, -hĕr- ]


  1. 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.

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