Accumulator

Accumulator may refer to:
 * Accumulator (bet), a parlay bet
 * Accumulator (computing), in a CPU, a processor register for storing intermediate results
 * Accumulator (computer vision), discrete cell structure to count votes, standard component of the Hough transform
 * Accumulator (cryptography), a value, determined by a set of values, that allows one to verify if any one of the original values is a member of the set
 * Accumulator (energy), an apparatus for storing energy or power
 * Capacitor, in electrical engineering, also known by the obsolete term accumulator
 * Electrochemical cell, a cell that stores electrical energy, typically used in rechargeable batteries
 * Hydraulic accumulator, an energy storage device using hydraulic fluid under pressure
 * Thermal accumulator, a device or system that provides thermal energy storage as from concentrated solar power and storage heaters or heat banks in buildings
 * Accumulator (structured product), a financial contract used by clients (usually individuals) to accumulate stock positions over time
 * Accumulator 1, a Czech film
 * Dynamic accumulator, a plant that mines nutrients from the soil through its roots