convex

/'kɔn'veks/

Thân thiện

The lens has a convex shape that bulges outward in the middle.

Definition

1. Adjective:
   • Curving or bulging outward: Describes a surface or shape that curves outward, like the exterior of a sphere or a dome. The opposite of concave (curving inward).

Examples of Usage

• Adjective:
  • A convex lens is thicker in the middle than at the edges.
  • The convex side of a spoon reflects a distorted, enlarged image.
  • The mirror had a convex surface, providing a wide-angle view of the room.

Advanced Usage

• Mathematical/Geometric Context: In geometry, a polygon is convex if all its interior angles are less than 180° and no line segment between two points on its boundary ever goes outside the polygon.
  • A square is a convex polygon, but a star shape is not.
• Economics/Function Context: A function is described as convex if the line segment between any two points on its graph lies on or above the graph.
  • The utility function in the model was assumed to be convex.

Variants and Related Words

• Convexity (noun): The state or quality of being convex.
  • The convexity of the mirror allowed for a broader field of vision.
• Convexly (adverb): In a convex manner; with an outward curve.
  • The surface curved convexly.

Synonyms

• Protuberant: Bulging outward.
• Bulging: Swelling outward.
• Rounded: Having a curved shape.

Antonyms

• Concave: Curving or hollowed inward.
• Hollow: Having a sunken or indented area.
• Depressed: Pressed or sunk down from the surface.

Học thuật

Adjective

1. curving or bulging outward

Từ đồng nghĩa

• bulging