What is the meaning of Headroom?
The vertical clearance above someone's head, as in a tunnel, doorway etc.
The vertical measurement, top to bottom, for example for clearance under a bridge.
The ability of a system to reproduce loud sounds free of distortion; dynamic headroom.
The distance between the actual performance of an algorithm and its maximum possible performance.
Synonym of headspace (“space between the top of the contents of a container and its seal”)
Source: wiktionary.orgSearch words containing