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Concave Meaning: Definition, Examples, and Translations

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concave

[kɒnˈkeɪv ]

Definition

Context #1 | Adjective

shape description

Concave refers to a shape or surface that curves inward, resembling a bowl. This term is often used in geometry to describe figures, such as concave polygons, where at least one interior angle is greater than 180 degrees. In optics, concave mirrors are designed to direct light to a focal point, and are commonly used in telescopes and reflectors. The concept is widely found in various fields, including art and architecture, where concave structures can create unique visual effects.

Synonyms

curved inward, depressed, hollow.

Examples of usage

  • The mirror is concave, providing a magnified view.
  • In geometry, a concave polygon has points that curve inward.
  • The artist used a concave lens to create a special effect.
  • The bowl is concave, perfect for holding liquids.

Translations

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Interesting Facts

Mathematics

  • In geometry, a concave shape has at least one angle that is greater than 180 degrees.
  • Concave polygons can create interesting optical illusions, where some points appear to be pulled inward.

Physics

  • Concave mirrors, which curve inward, focus light to a single point, making them useful in telescopes.
  • In sound technology, concave surfaces can enhance sound, as seen in some musical instruments like parabolic microphones.

Art

  • Artists use concave and convex shapes to create depth and perspective in paintings, influencing how we perceive visual space.
  • The shape of certain sculptures, like those by Henry Moore, often features concave forms, inviting viewers to explore contours.

Architecture

  • Many ancient structures, such as amphitheaters, have concave designs that enhance acoustics, allowing sound to travel better.
  • Modern buildings often use concave elements in design for aesthetic appeal and functional purposes, blending art with engineering.

Nature

  • Concave shapes appear in nature, such as the curves of certain leaves and flower petals, which help optimize sunlight absorption.
  • Some animal skeletons exhibit concave structures, providing strength while minimizing weight, like bird bones.

Origin of 'concave'

The word 'concave' is derived from the Latin term 'concavus', which means 'hollow' or 'arched'. It is formed from 'con-' meaning 'with' and 'cavus' meaning 'hollow'. The usage of the word can be traced back to the late 15th century when it began to appear in mathematical and scientific contexts, particularly in describing shapes in geometry. The term gained prominence in various fields, including optics, where concave mirrors were essential for focusing light. Over time, 'concave' has been adopted more broadly in art and architecture to describe inwardly curving surfaces or forms. Today, it is a common descriptor in both everyday and technical language.

Word Frequency Rank

Position #9,000 indicates this is an advanced-level word. While not essential for basic communication, it will enhance your ability to understand and create more nuanced content.