av•a•lanche(av′ə lanch′, -länch′),USA pronunciationn., v.,-lanched, -lanch•ing. n.
a large mass of snow, ice, etc., detached from a mountain slope and sliding or falling suddenly downward.
anything like an avalanche in suddenness and overwhelming quantity:an avalanche of misfortunes; an avalanche of fan mail.
PhysicsAlso called Townsend avalanche. 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.
to come down in, or like, an avalanche.
to overwhelm with an extremely large amount of anything; swamp.
pre-Latin (perh. Ligurian) *lavanca, or reshaping of Late Latin labīna landslide (derivative of Latin labī to slide) with a pre-Latin suffix -anca
dialect, dialectal (Savoy) avalantse, alteration (by association with avaler to descend rapidly) of laventse