A function key is a key on a computer or terminal keyboard which can be programmed so as to cause an operating system command interpreter or application program to perform certain actions, a form of soft key. On some keyboards/computers, function keys may have default actions, accessible on power-on.
Surge definition, a strong, wavelike, forward movement, rush, or sweep: the onward surge of an angry mob. See more.
surge noun [C]. âº a âsudden and âgreat âincrease: a surge in âsales a surge in the âstock âmarket The âyoung Americanâs âvictory âtouched off a surge of âinterest in âgolf âacross the âcountry.