concave - Master This Word
Master this word with our 5-step learning method – Learn English in English
concave Word Meanings
- curved inward like the inside of a bowl
- having a hollow or depressed shape
- sometimes used figuratively to describe a depressed state
concave Example Sentences
Example sentences are the start of understanding. Don't rush to memorize. First feel how the word works in a sentence.
concave Phonetic & Pronunciation
UK
/ˈkɒn.keɪv/
US
/ˈkɑn.keɪv/
concave Word Etymology
Root decomposition: 'con-' (together) + 'cavus' (hollow). Historical origin: Latin → Old French → English. Memory image: Imagine a bowl being filled, the inward curve emphasizing the space it creates, a place for something special nestled within.
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
Concave describes a surface or shape that curves inward, like the inside of a bowl. It contrasts with convex, which bulges outward. In geometry, a concave polygon has at least one interior angle greater than 180 degrees, and its interior is on the same side as the curvature. In everyday language, concave can describe hollow or depressed shapes, such as a concave mirror or a dented spoon. The word is also used figuratively to describe a depressed or withdrawn mood. Etymology comes from con- together and cavus hollow, via Latin and Old French into English.
Usage Reminders
- - Concave describes inward-curving surfaces, not outward bulges.
- - Remember the opposite term convex.
- - Common in geometry, mirrors, and bowls.
- - It can describe moods figuratively as depressed or withdrawn.
- - Pronounce con-cave with the stress on 'cave'.
Common Misconceptions
- Confusing concave with convex; they describe opposite curvatures.
- Thinking concave means simply hollow—its curvature could be a deep inward bend.
- Assuming all curved shapes are concave; only some are, depending on the interior side.
- Mistaking concave for depressed in all figurative uses; it mainly refers to curvature, not mood.
- Forgetting the geometry nuance: a concave polygon has at least one interior angle > 180 degrees.
Thinking Differences
For an English speaker, concave emphasizes inward curvature as a spatial property. Learners often picture a bowl when they hear ‘concave’ and worry about confusing it with ‘depressed,’ which is metaphorical rather than geometrical.
Learning Tips
- Visualize a bowl and a spoon to see inward curvature.
- Compare with convex by imagining a bubble bulging outward.
- Practice naming shapes: concave, convex, hollow, dented.
- Use concave in both physical and figurative contexts to build flexibility.
- Pronounce with emphasis on the second syllable: conCAVE.
- Check geometry diagrams to reinforce the idea.
5-Step Learning Method - Learn English in English
Step 1: Meaning
What does the word 'concave' mean?
A.A method of cooking
B.A type of food
C.A shape that curves inward
D.A social gathering
Step 2: Usage
Choose the correct usage of the word 'concave' in a sentence.
A.The student wrote a concave essay on history.
B.The mirror is concave, making images appear larger.
C.She wore a concave dress to the party.
D.His speech was quite concave and engaging.
Step 3: Similar Words
Which word is most similar to 'concave'?
A.Convex
B.Hollow
C.Curved
D.Flat
Step 4: Opposite Words
What is the opposite of 'concave'?
A.Convex
B.Concave
C.Straight
D.Indented
Step 5: Mastery
Can you think of a real-life context where a shape might be concave?
A.A bowl that holds fruit
B.A plate that has a raised edge
C.A flat piece of cardboard
D.A smooth, round pebble
Related Listening
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