cavity
B2Formal to neutral; common in medical, dental, and technical contexts.
Definition
Meaning
A hollow space or hole within a solid object, especially in the body.
A hollow area or void; in dentistry, a decayed part of a tooth; in engineering, a recess or void in a structure.
Linguistics
Semantic Notes
Primarily refers to a negative space within something solid. Often implies a natural or pathological hollow, not one created intentionally (like a 'hole').
Dialectal Variation
British vs American Usage
Differences
Minimal. 'Cavity' is standard in both. In informal dental contexts, Americans might say 'I have a cavity' where a Brit might say 'I've got a hole in my tooth'.
Connotations
Neutral/clinical in both varieties. Can have a slightly ominous connotation when referring to the body (e.g., 'a cavity in the lung').
Frequency
Slightly higher frequency in American English due to common public health messaging about 'dental cavities'.
Vocabulary
Collocations
Grammar
Valency Patterns
[verb] + cavity: fill/explore/enter the cavity[adjective] + cavity: abdominal/nasal/dental cavitycavity + [preposition]: cavity in the tooth/wallVocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “None directly. The word is typically used literally.”
Usage
Context Usage
Business
Rare, except in construction ('cavity wall insulation').
Academic
Common in medical, biological, dental, and materials science texts.
Everyday
Most common in the context of dental health ('going to the dentist for a cavity').
Technical
Precise term in anatomy, dentistry, engineering, and physics (e.g., 'resonant cavity').
Examples
By Part of Speech
noun
British English
- The surveyor checked the cavity wall for damp.
- A cavity was discovered during the routine dental check-up.
American English
- The insulation is blown into the wall cavity.
- You need to get that cavity filled before it gets worse.
Examples
By CEFR Level
- The dentist said I have no cavities.
- Birds make nests in cavities in trees.
- Cavity wall insulation can reduce your heating bills.
- The doctor examined the abdominal cavity with an ultrasound.
- The fossil's skull had several unusual cavities which puzzled paleontologists.
- Advanced decay had led to a large cavity beneath the filling.
- The resonator works by creating a standing wave within a precisely engineered cavity.
- The biopsy revealed abnormal cell growth lining the pulmonary cavity.
Learning
Memory Aids
Mnemonic
Think of a CAVE inside your body or a tooth – a CAVity is like a tiny internal cave.
Conceptual Metaphor
THE BODY IS A CONTAINER (with internal cavities). PROBLEMS ARE HOLLOWS/EMPTINESS (a cavity represents decay or absence).
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Do not confuse with 'пещера' (cave). The direct equivalent is 'полость'. 'Cavity' is more specific and clinical than general 'дыра' (hole).
Common Mistakes
- Using 'cavity' for a surface hole (e.g., in the ground – use 'hole' or 'pit').
- Pronouncing it as /kəˈvɪt.i/ (stress is on the first syllable).
- Confusing 'cavity' (noun) with 'concave' (adjective).
Practice
Quiz
In which context is the word 'cavity' LEAST likely to be used?
FAQ
Frequently Asked Questions
No. While often associated with decay (dental) or problems (body), it neutrally describes any hollow space. The 'nasal cavity' is a normal, healthy part of anatomy.
A 'hole' can go through something or be on its surface. A 'cavity' is specifically an enclosed hollow *within* a solid object or body. All cavities are holes, but not all holes are cavities.
No, 'cavity' is solely a noun. The related verb is 'excavate' or 'hollow out'.
Yes, it's the formal anatomical term for the mouth.
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