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avalanche

American  
[av-uh-lanch, -lahnch] / ˈæv əˌlæntʃ, -ˌlɑntʃ /

noun

  • avalanches
    plural
  1. a large mass of snow, ice, etc., detached from a mountain slope and sliding or falling suddenly downward.

  2. anything like an avalanche in suddenness and overwhelming quantity.

    an avalanche of misfortunes; an avalanche of fan mail.

  3. Also called Townsend avalanche. Physics, Chemistry. a cumulative ionization process in which the ions and electrons of one generation undergo collisions that produce a greater number of ions and electrons in succeeding generations.


verb (used without object)

  • avalanches,
    present (3rd person singular)
  • avalanched,
    past participle,  past
  • avalanching
    present participle
  1. to come down in, or like, an avalanche.

verb (used with object)

  • avalanches,
    present (3rd person singular)
  • avalanched,
    past participle,  past
  • avalanching
    present participle
  1. to overwhelm with an extremely large amount of anything; swamp.

avalanche British  
/ ˈævəˌlɑːntʃ /

noun

    1. a fall of large masses of snow and ice down a mountain

    2. a fall of rocks, sand, etc

  1. a sudden or overwhelming appearance of a large quantity of things

    an avalanche of letters

  2. physics a group of ions or electrons produced by a single ion or electron as a result of a collision with some other form of matter

"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

verb

  1. to come down overwhelmingly (upon)

"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
avalanche Scientific  
/ ăv′ə-lănch′ /
  1. The sudden fall or slide of a large mass of material down the side of a mountain. Avalanches may contain snow, ice, rock, soil, or a mixture of these materials. Avalanches can be triggered by changes in temperature, by sound vibrations, or by vibrations in the earth itself.

  2. A process resulting in the production of large numbers of ionized particles, in which electrons or ions collide with molecules, with each collision itself producing an additional electron or ion that in turn collides with other molecules. Avalanches are what generate the pulses of electric current that are registered by Geiger counters.


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Present

Past

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Etymology

Origin of avalanche

1755–65; < French < dial. (Savoy) avalantse, alteration (by association with avaler to descend rapidly) of laventse < pre-Latin (perhaps Ligurian) *lavanca, or reshaping of Late Latin labīna landslide (derivative of Latin labī to slide) with a pre-Latin suffix -anca

Explanation

Look out below! An avalanche is a whole lot of falling snow and ice. Also, life can feel like an avalanche when things get hectic. Avalanche may be a fun word, but it's not a fun thing. If you were in a real, literal avalanche, then a huge amount of snow, ice, rocks, and mud would be falling off a mountain — potentially on to you. People get killed in avalanches. On the other hand, if every teacher in school gives you homework on the same night, that is "an avalanche of schoolwork." You'll survive it, but it's not much fun at the time.

Keep Reading on Vocabulary.com

Vocabulary lists containing avalanche

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.

See Examples For:

We are still working through the first side of the record, and the memories are an avalanche at this point.

From Salon ● Oct. 7, 2026

OpenAI says it drew on those recommendations as it released this avalanche of math.

From The Wall Street Journal ● Oct. 7, 2026

A magnitude 7.8 earthquake that struck the area in 2015 and triggered a rock-ice avalanche, could have also weakened the underlying rock mass, according to the study.

From BBC ● Sep. 17, 2026

William & Mary used “a thrilling avalanche of forward passes” and “set their teeth grimly to stage a gigantic comeback” in the third quarter, according to a Newport News story at the time.

From Los Angeles Times ● Sep. 17, 2026

I was pretty sure if I tried to sing, all I would cause was an avalanche.

From "The Last Olympian" by Rick Riordan

The researchers point to possible applications in avalanches, landslides, materials science, and particle-filled inks used in 3D printing.

From Science Daily ● Sep. 18, 2026

These deposits form when underwater avalanches of mud, sand, and debris rush down the seafloor and eventually settle into thick sediment layers.

From Science Daily ● Jun. 26, 2026

The man was among six people rescued in four separate incidents on and around Ben Nevis - two of which were during avalanches.

From BBC ● Feb. 20, 2026

The latest deaths took to 18 the number of dead in avalanches in Austria this winter season.

From Barron's ● Feb. 20, 2026

The glacier rumbled, and little avalanches of snow tumbled down the cliffside.

From "The Wild Robot Protects" by Peter Brown

A million tons of sodden dirt avalanched down onto Riverside Drive from Elysian Park.

From Los Angeles Times ● Sep. 17, 2026

No wonder Norway avalanched us in the medal count last month.

From Washington Post ● Mar. 26, 2018

It added: "Two of the rescue team men avalanched traversing below No 3 Gully Buttress."

From BBC ● Feb. 17, 2016

The awareness of the trend has since avalanched.

From Forbes ● Mar. 9, 2011

Macon returned with a basket and avalanched pink shrimp, corn on the cob, and red potatoes across the paper-covered table.

From "Caterpillar Summer" by Gillian McDunn

Unlike ski resorts, which use explosives and other mechanisms to keep inbounds slopes from avalanching during ski days, the backcountry is uncontrolled.

From Washington Post ● Nov. 11, 2021

But many of today’s backcountry users want to make graceful turns through steep slopes covered with untracked powder, which means they generally want to ski slopes that have a relatively high possibility of avalanching.

From Washington Post ● Nov. 11, 2021

For many artists the avalanching awards and wealth of later life come with an unwelcome diminishing of ideas, but Rauschenberg was still avid for discoveries in his 80s.

From The Guardian ● Nov. 25, 2016

The results came in slowly throughout all the night, and then all at once, with calls avalanching in from key states between 10 and 11 p.m..

From Time ● Nov. 5, 2014

I froze, my heart in my throat, but the avalanching ice passed fifty yards to the left, out of sight, without doing any damage.

From "Into Thin Air" by Jon Krakauer

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