A kind of proportional counter that detects charged particles and photons and can give positional information on their trajectory, by tracking the trails of gaseous ionization.

A room used by divers to gradually readjust to normal air pressure.

plural of chamber gate

A gate system in a fortification, comprising two or more successive gateways linked by an easily defended passageway between two walls.

(government, rare) The single legislative chamber of a unicameral legislature.

(business) An association of businesses to promote their interests in a community.

A marine mollusc, of the family Nautilidae native to the Pacific Ocean and Indian Ocean, which has tentacles and a spiral shell with a series of air-filled chambers. / A nautilus, Nautilus pompilius.

A sealed chamber in which people are executed with poison gas.

A chamber whose dimensions allow sound to echo and build up. / A similar chamber that allows resonance of electromagnetic waves.

(obsolete) a servant in a royal household who had access to the bedchamber