American Heritage® Dictionary of the English Language, Fourth Edition
- n. Space above one's head, as in a motor vehicle, above a doorway, or in a tunnel; clearance.
- n. Electronics Dynamic headroom.
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. The term may apply either to the vertical distance from the nosing of the step below to the ceiling or any cross-beam or the like above, or to the distance measured out diagonally from the nosing of a step.
- n. the vertical clearance above someone's head, as in a tunnel, doorway etc
- n. electronics 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
GNU Webster's 1913
- n. (Arch.), Mostly Brit. See headway, 2.
- n. vertical space available to allow easy passage under something
- n. the capacity of a system to reproduce loud sounds without distortion
“PERFORMANCE: In a luxury car, power is less about maximum speed and acceleration than the equivalent to what audiophiles call "headroom" - the capacity to deal instantly and effortlessly with any demand on the system.”
“-- Wide supply voltage range of +2.5 V to +18 V and rail-to-rail output swing allow for increased headroom, which is critical for audio analog-to-digital converter (ADC) front ends and digital-to-analog converter (DAC) post filters, including TI's PCM42xx and PCM17xx devices.”
“Everyone, including people in the third row, get at least 40 inches of headroom, which is unusual.”
“The A4 is contemporary and sleek, inside and out, without compromise to headroom, which is 40 inches in front with a sunroof.”
“That feature helps with headroom, which is tight in back due to the stadium seating that raises rear riders above their front-seat counterparts.”
“The other major issue they're expected to badger him about is whether the so-called headroom in TARP should be used for any other purpose besides reducing the federal deficit.”
“Anglo-Australian miner Rio Tinto decision to cut 2009-10 iron ore prices for Nippon Steel Corp and Posco by 33%-44% leaves "headroom" for some spot price increases for Indian iron ore, they said.”
“This means that the US would come out of the Round on current proposals with "headroom" between its applied and bound rates for agricultural production subsidies.”
“The CRV and the Element offer an amazing amount of headroom which is important to our respective lifestyles.”
These user-created lists contain the word ‘headroom’.
An add-on to Trivet's list elbow room and Lampbane's list 2BDRM W/VU that tries not to duplicate Trivet's and Lampbane's existing rooms. Virtual, allegorical and proverbial rooms accepted.
A sort of stuffie of words/phrases that include "head"
head of cattle, out of one's head, head of the stairs, come to a head, head of steam, head of the page, win by a head, head taller, headway, fountainhead, heads or tails, hit the nail on t... and 143 more...
Looking for tweets for headroom.