#chamber  a natural or artificial enclosed space
  supertype:  #enclosure  artifact consisting of a space that has been enclosed for some purpose
  subtype:  #airlock__air_lock__airlock  a chamber that provides access to space where air is under pressure
  subtype:  #burial_chamber__sepulcher__sepulchre  a chamber that is used as a grave
     subtype:  #crypt  a cellar or vault or underground burial chamber (especially beneath a church)
     subtype:  #mausoleum  a large burial chamber, usually above ground
        subtype:  #Taj_Mahal  beautiful mausoleum at Agra built by the Mogul emperor Shah Jahan (completed in 1649) in memory of his favorite wife
     subtype:  #repository.burial_chamber__monument  a burial vault (usually for some famous person)
     subtype:  #burial_vault__vault  a burial chamber (usually underground)
        subtype:  #charnel_house__charnelhouse__charnel  a vault or building where corpses or bones are deposited
  subtype:  #pneumatic_caisson__pneumaticcaisson__caisson  large watertight chamber used for construction under water
  subtype:  #camera_obscura  a darkened enclosure in which images of outside objects are projected through a small aperture or lens onto a facing surface
  subtype:  #core.chamber  the chamber of a nuclear reactor containing the fissile material where the reaction takes place
  subtype:  #piston_chamber__cylinder  a chamber within which piston moves
     subtype:  #hydraulic_brake_cylinder__hydraulicbrakecylinder__brake_cylinder__brakecylinder__master_cylinder  a cylinder that contains brake fluid that is compressed by a piston
  subtype:  #firing_chamber__gun_chamber  chamber that is the part of a gun that receives the charge
  subtype:  #furnace  an enclosed chamber in which heat is produced to heat buildings, destroy refuse, smelt or refine ores, etc.
     subtype:  #blast_furnace__blastfurnace  a furnace for smelting of iron from iron oxide ores; combustion is intensified by a blast of air
     subtype:  #cremation_chamber__cremationchamber__crematory__crematorium  a furnace where a corpse can be burned and reduced to ashes
        subtype:  #gas_oven.cremation_chamber__gasoven  a cremation chamber fueled by gas
     subtype:  #cupola.furnace  a vertical cylindrical furnace for melting iron for casting
     subtype:  #electric_furnace  any furnace in which the heat is provided by an electric current
        subtype:  #Stassano_furnace__electric-arc_furnace  an electric furnace in which an electric arc provides the source of heat for making steel
     subtype:  #firebox  a furnace (as on a steam locomotive) in which fuel is burned
     subtype:  #forge  furnace consisting of a special hearth where metal is heated before shaping
     subtype:  #gas_furnace__gasfurnace  a furnace that burns gas
     subtype:  #incinerator  a furnace for incinerating (especially to dispose of refuse)
     subtype:  #oil_burner__oilburner__oil_furnace__oilfurnace  a furnace that burns oil
     subtype:  #tank_furnace  furnace into one end of which a batch of measured raw materials is shoveled and from the other end molten glass is obtained
  subtype:  #hyperbaric_chamber  a large chamber in which the oxygen pressure is above normal for the atmosphere; used in treating breathing disorders or carbon monoxide poisoning
  subtype:  #cavity_resonator__resonator__resonating_chamber  a hollow chamber whose dimensions allow the resonant oscillation of electromagnetic or acoustic waves
     subtype:  #soundbox  a resonating chamber in a musical instrument (as the body of a violin)
     subtype:  #soundboard__sounding_board  (music) resonator consisting of a thin board whose vibrations reinforce the sound of the instrument
  subtype:  #steam_chest  the chamber from which steam is distributed to a cylinder
  subtype:  #stokehold__stokehole__fireroom  (nautical) chamber or compartment in which the furnaces of a ship are stoked or fired
  subtype:  #stuffing_box__packing_box__packingbox  a small chamber in which packing is compressed around a reciprocating shaft or piston to form a seal
  subtype:  #tokamak  a doughnut-shaped chamber used in fusion research; a plasma is heated and confined in a magnetic bottle
  subtype:  #vacuum_chamber  a chamber from which nearly all matter (especially air) has been removed

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