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[hed-room, -roo m] /ˈhɛdˌrum, -ˌrʊm/
Nautical. the clear space between two decks.
Also called headway.
  1. clear vertical space, as between the head and sill of a doorway, the ceiling and floor of a room, or the ceiling of a vehicular passageway and a vehicle roof, as to allow passage or comfortable occupancy: over 7.5 feet of headroom in the attic;
    a covered bridge with limited headroom.
  2. clear vertical space above one’s head, as in a vehicle or room:
    plenty of headroom for passengers.
Also, head room.
Origin of headroom
1850-55; head + room Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for headroom
  • The expanded attic provides ample headroom for a new sitting area.
  • The raising of new capital leaves some headroom for further markdowns.
  • But it also means that there is more headroom for expansionary policy, and more need.
  • Not only does it have more than enough headroom, the vestibule is covered and there is a terrific rain cover.
  • The design is great with ample headroom and ventilation.
  • Pitch the five-equilateral-triangle design tall for a smaller footprint, but more headroom.
  • In my world the easiest way to categorize people is by headroom needs.
  • My room was the attic of an old house, with generous floor space and not much headroom.
  • There's tremendous technical headroom for doing that.
  • The seats are supportive, and there's plenty of leg and headroom for all but the tallest people.
British Dictionary definitions for headroom


/ˈhɛdˌrʊm; -ˌruːm/
the height of a bridge, room, etc; clearance
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for headroom

"space above the head," 1851, from head (n.) + room (n.).

Online Etymology Dictionary, © 2010 Douglas Harper
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