coherence
Americannoun
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logical interconnection; overall sense or understandability.
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congruity; consistency.
- Synonyms:
- rationality, agreement, harmony, correspondence
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Physics, Optics. (of waves) the state of being coherent.
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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.
noun
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logical or natural connection or consistency
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another word for cohesion
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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.
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See also Bose-Einstein condensate
Other Word Forms
- noncoherence noun
- noncoherency noun
Etymology
Origin of coherence
First recorded in 1570–80; coher(ent) + -ence
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
And there is some coherence to this argument.
From BBC
He also flagged the company’s “higher coherence times,” meaning that its quantum system can stay in its quantum state longer.
From MarketWatch
“You now have to write with an explicit intention and give everything coherence, as if life is a series of very coherent interconnections,” Díaz says.
From Los Angeles Times
Extending coherence time is therefore essential for building practical quantum hardware.
From Science Daily
The greater the coherence time of those entangled atoms, the farther apart the connected quantum computers can be.
From Science Daily
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
