the act of propagating.
the fact of being propagated.
multiplication by natural reproduction.
transmission or dissemination.

1400–50; late Middle English propagacyon < Latin propāgātiōn- (stem of propāgātiō). See propagate, -ion

propagational, adjective
nonpropagation, noun
self-propagation, noun

4. spreading, dispersion, diffusion. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
propagate (ˈprɒpəˌɡeɪt)
1.  biology to reproduce or cause to reproduce; breed
2.  (tr) horticulture to produce (plants) by layering, grafting, cuttings, etc
3.  (tr) to promulgate; disseminate
4.  physics to move through, cause to move through, or transmit, esp in the form of a wave: to propagate sound
5.  (tr) to transmit (characteristics) from one generation to the next
[C16: from Latin propāgāre to increase (plants) by cuttings, from propāgēs a cutting, from pangere to fasten]

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

mid-15c., from O.Fr. propagacion (13c.), from L. propagationem (nom. propagatio) "a propagation, extension," noun of action from propagare "multiply plants by layers, breed," from propago (gen. propaginis) "that which propagates, offspring," from pro- "forth" + *pag-, root of pangere "to fasten" (see
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

propagation prop·a·ga·tion (prŏp'ə-gā'shən)

  1. Multiplication or increase, as by natural reproduction.

  2. The act or process of propagating, especially the process by which an impulse is transmitted along a nerve fiber.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Encyclopedia Britannica


in horticulture, the reproduction of plants by any number of natural or artificial means

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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Example sentences
What brings on this sudden propagation of algae is not completely known,
  although water temperatures play a role in many cases.
For its part, there isn't much in gene propagation to make the heart sing.
Combustion and propagation processes are then simulated in order to predict the
  spread of the fire.
Malicious software comes in several flavors, distinguished primarily by their
  method of propagation.
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