cumulation

noun

1. (countable, uncommon, uncountable)Synonym of accumulation.

   “The cumulation and toleration of medicines.”

   “The Cumulation of Methylmercury and Phenylmercury Species on Alga.”

   “Very improbable structures readily arise through the cumulation of small alterations.”

   “Changes in internal boundaries can also occur more frequently and can complicate cumulations of data for cities [...]”

2. (countable, uncountable)The effect of free trade agreements on the rules of origin in calculating importation tariffs, quotas, etc.

   “Cumulation is a deviation from the principle that goods must be produced entirely in the country of exportation, or have undergone sufficient working or processing there, in order to qualify as originating goods. Cumulation makes it possible for goods from a free trade partner to be treated the same as those originating in the country of exportation.”