It means to roll together- come together for example... lactic acid accumulates
First of all it's accumulate not accumulated!
Second this is what it really means...:
1. Gather together or acquire an increasing number or quantity of.
2. Gradually gather or acquire (a resulting whole): "her goal was to accumulate a huge fortune".
An increase by natural growth or addition
noun1. act or state of accumulating; state of being accumulated.
2. that which is accumulated; an accumulated amount, number, or mass.
3.growth by continuous additions, as of interest to principal.
"Accumulating" basically means "gathering" or "hoarding".
Definition pasted from reference.dictionary.com
It means that something is piling up and becoming more, such as: It was snowing so hard that snow had accumulated a total of two feet deep.
an increase by natural growth or addition
policeman
a growing body of evidence means that a lot of evidence is accumulating in anywhere.
gas and dust accumulating into larger bodies
A game, typically with an accumulating jackpot, in which participants play numbers of their choice in a random drawing.
if by accumulating you mean enough to show on the stick as overfull then there is likely a fuel system malfunction or a cracked component. If you're talking about a minute amount then it could be a dead cylinder (no spark and/or no compression)
its not possible
This is a dream about accumulating wealth. It might be simple wish-fulfillment, or it might reflect a recent experience or expectation.
It is an excessive devotion to accumulating facts.
Life is not just accumulating things and being materialistic, but is about self-development, experiencing and achieving happiness.
Investment
rich enzymes
Accumulation is a noun - the act of accumulating
decomposition