cavity - Master This Word
Master this word with our 5-step learning method – Learn English in English
cavity Word Meanings
- a hollow space or hole within a solid object
- a dental caries or decay in a tooth
- any empty area or void
cavity Example Sentences
Example sentences are the start of understanding. Don't rush to memorize. First feel how the word works in a sentence.
cavity Phonetic & Pronunciation
UK
/ˈkæv.ɪ.ti/
US
/ˈkæv.ɪ.ti/
cavity Word Etymology
from Latin 'cavitas' meaning 'hollowness' (cava = hollow) → English. Imagine a dark, empty space within a solid object, like a cave waiting to be explored.
Note 1: These definitions and etymologies are not standard dictionary definitions, but extended explanations provided to help with memorization and understanding of the actual application of words. Through this background information, we strive to make words more vivid and easier to understand, and help you remember their meanings in real life.
Note 2: LexiTalk designs the learning flow around the linguistics principle of “Comprehensible Input.” When learners encounter material that is slightly above their level but still understandable from context, the brain naturally absorbs the language. That’s why we keep every word inside authentic contexts, using examples and associations to help you understand it and use it flexibly.
Read the FAQ explanation of Comprehensible InputReal Context
Think of a cavity as a hollow space inside something solid, a hollow where nothing remains. It can describe a natural void, like the empty space inside a stone or a cave, a cavity in a container, or a cavity within a wall where pipes run. In dentistry, a cavity refers to tooth decay creating a hole that a dentist must treat. The word can also mean any empty area or void in a broader sense, such as a cavity in a plan, a cavity in the earth, or a cavity in a conversation where information is missing.
Usage Reminders
- Use cavity for hollow spaces and for dental decay; avoid overloading with other senses; remember the plural cavities can refer to teeth or spaces; pair with verb forms like form, create, fill; contrast with cave when talking about natural caverns; use metaphorical sense with caution.
Common Misconceptions
- It only refers to tooth decay.
- It must always describe a visible hole.
- It cannot describe empty spaces inside objects.
- Cavities always refer to dental issues, never metaphorical gaps.
- Cavities and caves are the same thing.
Thinking Differences
Cavity covers both hollow spaces and tooth decay; learners often assume it only means a dental hole and miss its broader, non-dental uses.
Learning Tips
- memorize the two senses (hollow space, tooth decay)
- note common collocations: form a cavity, fill a cavity
- practice with non-dental contexts like walls and plans
- compare with synonyms cave and hollow to avoid overlap
- use metaphors carefully (e. g., a cavity in the plan)
- check plural form cavities for both contexts
5-Step Learning Method - Learn English in English
Step 1: Meaning
What is the meaning of 'cavity'?
A.A large body of water.
B.A loud noise.
C.An empty space within a solid object.
D.A type of bird.
Step 2: Usage
In which sentence is 'cavity' used correctly?
A.I heard a cavity in the distance.
B.The cavity sang a beautiful song.
C.There was a cavity in the ground filled with water.
D.The cavity flew in the sky.
Step 3: Similar Words
Which word is a synonym of 'cavity'?
A.Solid
B.Hollow
C.Round
D.Bright
Step 4: Opposite Words
What is the opposite of 'cavity'?
A.Small
B.Empty
C.Filled
D.Weak
Step 5: Mastery
How would you use 'cavity' in a real-life situation?
A.Describing a hole in a tooth at the dentist.
B.Talking about a type of flower.
C.Referring to a new technology device.
D.Discussing a recent vacation.
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