Here you will find one or more explanations in English for the word Accumulator.
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Accumulator
Accumulator Ac*cu"mu*la`tor, n. [L.]
1. One who, or that which, accumulates, collects, or amasses.
2. (Mech.) An apparatus by means of which energy or power can
be stored, such as the cylinder or tank for storing water
for hydraulic elevators, the secondary or storage battery
used for accumulating the energy of electrical charges,
etc.
3. A system of elastic springs for relieving the strain upon
a rope, as in deep-sea dredging.
Meaning of Accumulator from wikipedia