avalanche

[ av-uh-lanch, -lahnch ]

noun

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)

, av·a·lanched, av·a·lanch·ing.

1. to come down in, or like, an avalanche.

verb (used with object)

, av·a·lanched, av·a·lanch·ing.

1. to overwhelm with an extremely large amount of anything; swamp.

avalanche

/ ˈævəˌlɑːntʃ /

noun

1. 1. a fall of large masses of snow and ice down a mountain
   2. a fall of rocks, sand, etc
2. a sudden or overwhelming appearance of a large quantity of things

   an avalanche of letters

3. 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

verb

1. to come down overwhelmingly (upon)

avalanche

/ 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.

Word History and Origins

Origin of avalanche¹

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

Word History and Origins

Origin of avalanche¹

C18: from French, by mistaken division from la valanche, from valanche, from (northwestern Alps) dialect lavantse; related to Old Provençal lavanca, of obscure origin

Example Sentences

They suggested these seeds could serve as an analogue in the study of geological flow, particularly in a region prone to landslides and avalanches.

From Science Daily

But an avalanche at the time killed four people, including his friend and teacher, Tenjen Lama Sherpa.

From NewsForKids.net

Mary Tyler Moore emerging from the living room closet on an avalanche of nuts is the stuff of nightmares — and one of that series’ most replayed moments.

From Los Angeles Times

"The area became environmentally very unstable because of the flash floods, because of the avalanches," he said.

From BBC

She agrees that there is an “avalanche” of AI tools, but says they need to be used correctly.

From BBC

Related Words

• barrage
• deluge
• flood
• landslide
• torrent