from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Space above one's head, as in a motor vehicle, above a doorway, or in a tunnel; clearance.
- n. Electronics Dynamic headroom.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. the vertical clearance above someone's head, as in a tunnel, doorway etc
- n. the ability of a system to reproduce loud sounds free of distortion; dynamic headroom
- n. the distance between the actual performance of an algorithm to its maximum possible performance
from the GNU version of the Collaborative International Dictionary of English
- n. See headway, 2.
from The Century Dictionary and Cyclopedia
- n. The vertical distance from a floor to the ceiling or beams above it: so named because this distance determines whether or not a person has room for his head when standing or walking on the floor.
- n. Specifically, the space left above a stair by means of which the head of the person ascending the stair is kept free from striking or coming too near the superstructure.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. vertical space available to allow easy passage under something
- n. the capacity of a system to reproduce loud sounds without distortion
Sorry, no etymologies found.