The periodic energizing required to maintain the contents of computer memory, the display luminance of a computer screen, etc.
"The system automatically refreshes the RAM every few seconds to prevent data loss during power fluctuations."
In plain English: A refresh is an update that makes something look new again by loading fresh information from its source.
"The refreshing coolness of the mountain air made everyone feel better immediately."
Usage: As a noun, refresh refers specifically to the technical process of updating data in computer memory or adjusting a screen's brightness. Use this term only when discussing hardware maintenance; for general breaks from work, use "break" instead.
become or make oneself fresh again
"She freshened up after the tennis game"
To renew or revitalize.
"The cool sea breeze helped to refresh us after a long hike in the heat."
The word comes from the Old French refrescher, meaning "to refresh." It is formed by combining the prefix re- with fresh.