propagation
Americannoun
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the act of propagating.
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the fact of being propagated.
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multiplication by natural reproduction.
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transmission or dissemination.
- Synonyms:
- diffusion, dispersion
Other Word Forms
Etymology
Origin of propagation
First recorded in 1400–50; late Middle English propagacyon, from Latin propāgātiōn-, stem of propāgātiō; equivalent to propagate + -ion
Explanation
If your dog is about to have puppies, then she's engaged in the propagation of dogs, the creation of new life to further the species. Propagation has two main uses, both having to do with multiplying something. If it's used in relation to creatures, that means that the creatures are multiplying — having kids. A synonym for this is procreation. You can also use propagation for anything that multiplies and spreads through larger and larger numbers or spaces — from the propagation of weeds in your garden to the propagation of a new idea. In physics, propagation is wave movement.
Vocabulary lists containing propagation
Their Eyes Were Watching God
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"A Modest Proposal" by Jonathan Swift
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A Brief History of Time
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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.
This makes it significantly harder to interrupt the propagation of an AI-driven computer worm, because you have to anticipate all the possible vulnerabilities the devices might present.
From Barron's ● Oct. 13, 2026
The low-band portfolio gives SpaceX a coverage layer with stronger in-building propagation, complementing the mid-band spectrum it’s acquiring from EchoStar, the analysts say.
From The Wall Street Journal ● Oct. 9, 2026
The mathematical model they built to explain this behaviour wasn't new; it was the same one used to describe the spread of a forest fire or the propagation of an electrical signal through heart tissue.
From BBC ● Jun. 7, 2026
"Spatially variable birefringence, that is, the difference in the propagation of different polarizations of light, acts like a synthetic magnetic field," explains Dr. Piotr Kapuściński of the Faculty of Physics at the University of Warsaw.
From Science Daily ● Apr. 25, 2026
I was ignorant of the inverse square law for light propagation.
From "Cosmos" by Carl Sagan
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Get a wordDefinitions 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.
