The word "cavity" is correct and usable in written English.
You can use it to refer to a hole or space in a structure, often in a tooth. For example: "The dentist filled my cavity with a silver amalgam filling."
I'd come to hate the deep injections of anaesthetic, the needles so long they felt as if they might pierce my brain cavity.
If you are living on means tested benefits AND you live in the hardest-to-heat homes you may be eligible for a free new central heating boiler, insulation for a hot water cylinder, loft, cavity wall and solid wall insulation, draught proofing for doors and windows or renewable energy technologies such as solar panels.
At last, the mine-driver's boring rod punched through the sandstone from the Kinneil side into the cavity of the Valleyfield pit.
This caused a sudden drop in pressure in the synovial fluid between the joints, and the formation of a vapour cavity, or bubble.
We are also embarking on the Great British Refurb; by regulating the energy companies we are insulating 6m homes between 2008 and 2012, with every suitable loft and cavity being insulated by 2015.
Imagine the uproar right now if Olive's family had suggested she had been driven to suicide by multiple door knocks by doorstep sellers flogging cavity wall insulation.
SSE is also offering free cavity wall and loft insulation to all consumers - with some exclusions relating to the suitability of the property.
It offers energy efficiency measures, such as free loft and cavity wall insulation, depending on where you live.
The result is that the magnet causes the sensor to vibrate more strongly when the vibrations within the chest cavity veer away from the sweet spot.
Lifting the skull reveals a cavity with a ruby heart nestling inside.
However, the heart has been found to suffer the most, particularly with radiation to the thorax or mediastinum, the central part of the thoracic cavity.
