Capacitor

n. condenser, device which stores electricity while an operation is in progress (Electricity)

See Capacitor (component) for a discussion of specific types. A capacitor is an electrical/electronic device that can store energy in the electric field between a pair of  conductors (called "plates"). The process of storing energy in the capacitor is known as "charging", and involves electric charges of equal magnitude, but opposite polarity, building up on each plate.
See more at Wikipedia.org...

Noun
1. an electrical device characterized by its capacity to store an electric charge
(synonym) capacitance, condenser, electrical condenser
(hypernym) electrical device
(hyponym) bypass condenser, bypass capacitor
(part-holonym) circuit, electrical circuit, electric circuit

n. capacitor, condenser, device which stores electricity while an operation is in progress (Electricity)

n. capacitor, condenser