British Dictionary definitions for pre accumulation
the act or process of collecting together or becoming collected
something that has been collected, gathered, heaped, etc
the continuous growth of capital by retention of interest or earnings
(in computing the yield on a bond purchased at a discount) the amount that is added to each yield to bring the cost of the bond into equality with its par value over its life Compare amortization (sense 2)
the taking of a first and an advanced university degree simultaneously
late 15c., from Latin accumulationem (nominative accumulatio) "a heaping up," noun of action from past participle stem of accumulare "to heap up, amass," from ad- "in addition" (see ad-) + cumulare "heap up," from cumulus "heap" (see cumulus).