Noun accumulation has 4 senses
  1. accretion, accumulation - an increase by natural growth or addition
    --1 is a kind of increase, increment, growth
    --1 has particulars: backup; buildup; deposition, deposit
  2. collection, aggregation, accumulation, assemblage - several things grouped together or considered as a whole
    --2 is a kind of group, grouping
    --2 has particulars:
     procession; pharmacopoeia; string; wardrobe; wardrobe; weaponry, arms, implements of war, weapons system, munition; population, universe; armamentarium; art collection; backlog; battery; block; book, rule book; bottle collection; bunch, lot, caboodle; coin collection; collage; content; ensemble, tout ensemble; corpus; crop; tenantry; findings; pack; hand, deal; long suit; stamp collection; statuary; sum, summation, sum total; agglomeration; gimmickry; nuclear club; pile, heap, mound, cumulus; mass; combination; congregation; hit parade; Judaica; kludge; library, program library, subroutine library; library; mythology; Nag Hammadi, Nag Hammadi Library; biota, biology; fauna; petting zoo; set; Victoriana; class, category, family; job lot; package, bundle, packet, parcel; defense, defence, defense team, defense lawyers; prosecution; planting; signage; generally accepted accounting practices, GAAP; pantheon; Free World; Third World; Europe; Asia; North America; Central America; South America; Oort cloud; galaxy; galaxy, extragalactic nebula; fleet; fleet; fleet; repertoire; repertory, repertoire; assortment, mixture, mixed bag, miscellany, miscellanea, variety, salmagundi, smorgasbord, potpourri, motley; batch, clutch; batch; rogue's gallery; exhibition, exposition, expo; convoy; traffic; aviation, air power; vegetation, flora; law, jurisprudence; menagerie; data, information; ana; mail, post; treasure; treasure trove; troponymy, troponomy; smithereens; Wise Men, Magi; French West Indies
    Derived form: verb accumulate1
  3. accumulation, accrual, accruement - the act of accumulating
    --3 is a kind of increase, step-up
    --3 has particulars: buildup
    Derived forms: verb accumulate1, verb accumulate2
  4. accumulation - (finance) profits that are not paid out as dividends but are added to the capital base of the corporation
    --4 is a kind of
    net income, net, net profit, lucre, profit, profits, earnings
    --4 has particulars:
     store, stock, fund; reserve, backlog, stockpile
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