Term: boron chamber: an ionization chamber lined with boron or filled with boron trifluoride gas for counting low velocity neutrons
Broader: object: a tangible and visible entity; an entity that can cast a shadow | Unrelated: abney level: a surveying instrument consisting of a spirit level and a sighting tube; used to measure the angle of inclination of a line from the observer to the target
Broader: object: a tangible and visible entity; an entity that can cast a shadow | Unrelated: truss bridge: a bridge supported by trusses
Broader: object: a tangible and visible entity; an entity that can cast a shadow | Unrelated: circuit court of appeals: one of the twelve federal United States courts of appeals that cover a group of states known as a `circuit'
Broader: object: a tangible and visible entity; an entity that can cast a shadow | Unrelated: hamamelidanthum: genus of fossil plants of the Oligocene having flowers resembling those of the witch hazel; found in Baltic region
Broader: object: a tangible and visible entity; an entity that can cast a shadow | Unrelated: switch: control consisting of a mechanical or electrical or electronic device for making or breaking or changing the connections in a circuit
Broader: object: a tangible and visible entity; an entity that can cast a shadow | Unrelated: gout: a painful inflammation of the big toe and foot caused by defects in uric acid metabolism resulting in deposits of the acid and its salts in the blood and joints
Broader: object: a tangible and visible entity; an entity that can cast a shadow | Unrelated: hymenaea: genus of tropical American timber trees
Broader: object: a tangible and visible entity; an entity that can cast a shadow | Unrelated: sponge cloth: any soft porous fabric (especially in a loose honeycomb weave)
Broader: object: a tangible and visible entity; an entity that can cast a shadow | Unrelated: opium den: a building where opium is sold and used
Broader: object: a tangible and visible entity; an entity that can cast a shadow | Unrelated: mylar: a thin polyester film