cavity
Space within something
A cavity is a hollow space within something solid.
The body has cavities: the chest cavity, the abdominal cavity, the nasal cavity.
In everyday speech, cavity usually means a hole in a tooth caused by decay: The dentist found two cavities.
Cavities also appear in walls, rocks, and other materials where material has been removed or never formed.
Absence in matter
- hollowEmpty within
- voidWithout legal effect
- recessPause in activity
- pocketFabric compartment in clothing
gap · opening · space · depression · indentation · niche · alcove · chamber
Small scenic cavern
- karstEroded soluble rock terrain
- stalactiteHanging cave mineral deposit
- stalagmiteUpward-growing cave deposit
- limestoneCarbonate sedimentary rock
underground · speleology · subterranean · chamber · sinkhole · pothole · cenote · lava tube
Deeply vibrating with sound
- microwaveRadiation-based kitchen heater
- opticalOf vision or light
- laserConcentrated light device
- waveguideStructure directing energy propagation
resonator · oscillation · frequency · electromagnetic · acoustic · chamber · vacuum · mirror
hole
Absence in matter
pocket · gap · opening · space · depression · indentation · niche · alcove · chamber · pit
grotto
Small scenic cavern
- karstEroded soluble rock terrain
- stalactiteHanging cave mineral deposit
- stalagmiteUpward-growing cave deposit
limestone · underground · speleology · subterranean · chamber · sinkhole · pothole · cenote · lava tube · spelunking
resonant
Deeply vibrating with sound
waveguide · resonator · oscillation · frequency · electromagnetic · acoustic · chamber · vacuum · mirror · standing wave
filling
Material placed within
plaque · caries · molar · drilling · root canal · crown · fluoride · dentist · toothache · incisor
sinus
Air-filled cranial cavity
thoracic · pelvic · cranial · orbital · body · organ · membrane · tissue · pericardial · pleural
- Dentistdentist, dental floss, dental hygienist, dental crown, filling
- dentistrydentist, teeth, tooth, dentists, dental care
- dental problemsmissing teeth, tooth decay, overbite, underbite, crowded teeth
- tooth conditionschipped, cracked, loose, missing, rotten
- tooth problemscaries, tooth decay, crack, chip, fracture
- recessesrecess, alcove, niche, nook, cubbyhole
cavityprotrusion
Part extending outward
bulge · protuberance · convexity · projection · bump
- caving inCollapsing or surrendering
- cavity fillingRepair for tooth decay
- cranial cavitySkull's interior chamber
- chest cavityBody's upper internal chamber
- dental cavityDecayed hole in tooth
- cavity searchExamination of body openings
cavity resonator, caving, cavities, concavity, anticavity, cavity wall