# What is the Opposite(Antonym) of “concave”?

## The Opposite(Antonym) of “concave”

The antonyms of concave are convex and bulging. The antonyms convex and bulging describe a surface that curves outward, while concave describes a surface that curves inward.

## Definitions and Examples of convex, bulging

Learn when and how to use these words with these examples!

### convex

Having a surface that curves outward like the exterior of a sphere or circle.

Example

The magnifying glass has a convex lens that makes objects appear larger.

### bulging

Swollen or protruding outward.

Example

The bag was so full that it was bulging at the seams.

## Key Differences: convex vs bulging

• 1Convex describes a surface that curves outward, like the exterior of a sphere or circle.
• 2Bulging describes something that is swollen or protruding outward.
• 3Concave describes a surface that curves inward, like the interior of a sphere or circle.

## Effective Usage of convex, bulging

• 1Mathematics: Use concave and convex to describe the curvature of shapes.
• 2Science: Use concave and convex to describe the shape of lenses and mirrors.
• 3Art: Use concave and convex to describe the shape of sculptures and other three-dimensional art forms.
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Remember this!

The antonyms convex and bulging describe a surface that curves outward, while concave describes a surface that curves inward. These words are useful in mathematics, science, and art to describe the curvature of shapes, lenses, mirrors, and sculptures.

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