1. to gather or store energy over time; to build up energy reserves
The battery will accumulate energy when connected to the solar panel.
A bateria acumulará energia quando conectada ao painel solar.
2. to gather strength or power gradually before release or use
The storm was accumulating energy over the ocean.
A tempestade estava acumulando energia sobre o oceano.
3. in physics, to increase potential or kinetic energy through repeated actions
The pendulum accumulates energy as it swings back and forth.
O pêndulo acumula energia conforme oscila para frente e para trás.