accumulator accumulator /əˈkjʊmjəˌleɪtər/

noun

1. (computing) a register that has a built-in adder that adds an input number to the contents of the register  ( accumulator , accumulator register )
   (computing) a register that has a built-in adder that adds an input number to the contents of the register
   
2. A voltaic battery that stores electric charge  ( accumulator , storage battery )
   a voltaic battery that stores electric charge
   
   
3. (tax) a person who is employed to collect payments (as for rent or taxes)  ( accumulator , gatherer , collector )
   (tax) a person who is employed to collect payments (as for rent or taxes)