propagation

noun
prop·a·ga·tion | \ˌprä-pə-ˈgā-shən \

Definition of propagation 

: the act or action of propagating: such as

a : increase (as of a kind of organism) in numbers

b : the spreading of something (such as a belief) abroad or into new regions

c : enlargement or extension (as of a crack) in a solid body

Examples of propagation in a Sentence

Recent Examples on the Web

For example, the hardware used to move information between layers on one training cycle can be used to handle back-propagation of errors the next, and vice versa. John Timmer, Ars Technica, "Training a neural network in phase-change memory beats GPUs," 7 June 2018 Lau came to Paris at a time of growing public concern in the West that tech giants are failing to protect personal data, avoiding taxes or allowing the propagation of hate speech or lies. Washington Post, "China’s Tencent: Tech world must tackle privacy concerns," 24 May 2018 Worms are among the most powerful types of malware because their self-propagation gives them viral qualities. Dan Goodin, Ars Technica, "“Drupalgeddon2” touches off arms race to mass-exploit powerful Web servers," 20 Apr. 2018 This will allow InSight to measure heat flow which, in addition to analyzing the frequency and propagation patterns of Marsquakes that the seismometers detect, will provide a sort of x-ray of the Martian interior. Jeffrey Kluger, Time, "NASA's InSight Lander Is About to Give Mars its First Health Checkup in 4.5 Billion Years," 4 May 2018 As a member and later national officer of the The Garden Club of America, Caroline oversaw scholarships, garden awards and GCA programs over decades, and was an award winner herself in plant propagation. courant.com, "Caroline H. Rohrbach," 3 May 2018 The district will receive $100,000 from Nicor Gas as part of an intergovernmental agreement with the Forest Preserve District of Kane County for mussel propagation, monitoring, training and research collaboration. Staff Report, Aurora Beacon-News, "Project works to boost number of mussels in Kane, McHenry counties," 2 May 2018 President Xi Jinping, who rose to power in 2012, has discouraged the propagation of Western influence at universities and has urged stricter oversight of classes and professors. New York Times, "Students Defiant as Chinese University Warns #MeToo Activist," 24 Apr. 2018 In photonic systems, the direction of wave propagation is usually reversible. Davide Castelvecchi, Scientific American, "Physicists Harness Twisted Mathematics to Make Powerful Laser," 5 Feb. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'propagation.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of propagation

15th century, in the meaning defined above

Keep scrolling for more

Learn More about propagation

Share propagation

Statistics for propagation

Last Updated

27 Sep 2018

Look-up Popularity

Time Traveler for propagation

The first known use of propagation was in the 15th century

See more words from the same century

Keep scrolling for more

More Definitions for propagation

propagation

noun
prop·a·ga·tion | \ˌprä-pə-ˈgā-shən \

Kids Definition of propagation

: the act or process of causing to multiply or spread out the propagation of ideas

propagation

noun
prop·a·ga·tion | \ˌpräp-ə-ˈgā-shən \

Medical Definition of propagation 

: the act or action of propagating: as

a : increase (as of a kind of organism) in numbers propagation of a pure culture of bacteria

b : the spreading or transmission of something propagation of a nerve impulse

Keep scrolling for more

Comments on propagation

What made you want to look up propagation? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

lying above or upon

Get Word of the Day daily email!

Test Your Vocabulary

Words from Greek and Roman Mythology Quiz

  • the-triumph-of-venus-by-alessandro-magnasco
  • Boreal comes from the name of the ancient Greek god of which wind?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!