concave 🔊
Meaning of concave
A surface or shape that curves inward, like the interior of a circle or sphere.
Key Difference
Concave describes an inward curve, while its opposite, convex, describes an outward curve.
Example of concave
- The concave lens diverges light rays, making objects appear smaller.
- Ancient Roman architecture often used concave designs in ceilings for aesthetic appeal.
Synonyms
hollow 🔊
Meaning of hollow
Having a hole or empty space inside; not solid.
Key Difference
Hollow refers to an empty interior, while concave refers specifically to an inward-curving surface.
Example of hollow
- The hollow tree trunk provided shelter for small animals.
- His voice echoed in the hollow chamber.
sunken 🔊
Meaning of sunken
Situated below the surrounding level; depressed or hollowed.
Key Difference
Sunken implies a downward or recessed position, whereas concave refers to the curvature itself.
Example of sunken
- The sunken ship was discovered decades later on the ocean floor.
- Her sunken cheeks showed signs of exhaustion.
indented 🔊
Meaning of indented
Having notches, recesses, or inward curves.
Key Difference
Indented often implies small, deliberate recesses, while concave describes a smooth inward curve.
Example of indented
- The indented coastline provided natural harbors for ships.
- She pressed her thumb into the clay, leaving an indented mark.
cupped 🔊
Meaning of cupped
Shaped like a cup; slightly concave.
Key Difference
Cupped suggests a small, rounded inward curve, often resembling a cup, while concave is a broader term.
Example of cupped
- He held the water in his cupped hands.
- The cupped petals of the flower collected morning dew.
bowl-shaped 🔊
Meaning of bowl-shaped
Having the shape of a bowl; deeply concave.
Key Difference
Bowl-shaped implies a deeper, more pronounced concavity compared to a general concave shape.
Example of bowl-shaped
- The valley was bowl-shaped, surrounded by towering mountains.
- She served the salad in a large, bowl-shaped dish.
scooped 🔊
Meaning of scooped
Hollowed or curved inward as if by scooping.
Key Difference
Scooped suggests an action of removing material to create concavity, while concave is a passive description.
Example of scooped
- The sculptor scooped out the clay to form the concave base.
- The ice cream was scooped into a concave waffle cone.
depressed 🔊
Meaning of depressed
Pressed or pushed inward; sunken.
Key Difference
Depressed often implies a forced or unnatural inward curve, while concave can be natural or designed.
Example of depressed
- The depressed metal panel needed repair.
- The old mattress had a depressed area where he always sat.
caved-in 🔊
Meaning of caved-in
Collapsed inward; forming a concave shape due to pressure or damage.
Key Difference
Caved-in implies damage or collapse, whereas concave is a neutral or intentional description.
Example of caved-in
- The roof caved-in after the heavy snowfall.
- The caved-in tunnel was too dangerous to enter.
dished 🔊
Meaning of dished
Shaped like a dish; slightly concave.
Key Difference
Dished is often used for shallow concavity, similar to a dish, while concave is more general.
Example of dished
- The dished wheel rims improved aerodynamics.
- The old satellite antenna had a dished surface.
Conclusion
- Concave is used to describe any inward-curving surface, common in lenses, mirrors, and architectural designs.
- Hollow can be used when referring to empty spaces rather than just curved surfaces.
- Sunken is appropriate when describing something recessed below its surroundings, like sunken eyes or shipwrecks.
- Indented works best for surfaces with small, deliberate recesses, such as coastlines or text formatting.
- Cupped is ideal for describing small, hand-like curves, often in natural or human-made objects.
- Bowl-shaped should be used for deep, pronounced concavities, like valleys or large containers.
- Scooped implies an action, making it useful for describing how a concave shape was formed.
- Depressed is fitting for surfaces pushed inward due to force or wear.
- Caved-in is specific to structures or objects that have collapsed inward.
- Dished is a technical term often used in engineering or design for shallow concave shapes.