An icon is an image or symbol that represents something important or widely recognized. On a computer screen, icons are small pictures you click to open programs: a trash can icon for deleted files, a folder icon for storing documents, or an envelope icon for email. These simple images quickly tell you what something does without needing words.

The word also describes a person who becomes so famous or influential that they represent an entire era, movement, or idea. Marie Curie became an icon of scientific achievement. Amelia Earhart became an icon of courage and aviation. Athletes like Muhammad Ali or Serena Williams are considered sports icons, people whose achievements and character made them legendary. When someone is called iconic, they've become memorable and important enough that people immediately recognize them and what they stand for.

In religious art, particularly in Eastern Orthodox Christianity, an icon is a sacred painting of Jesus, Mary, or a saint, created according to traditional methods and treated with reverence. These icons can serve as windows into the divine, objects of spiritual contemplation and prayer.

All these meanings share something: whether it's a computer symbol, a famous person, or a religious painting, an icon is powerful because it represents something larger than itself. The simple image or person carries deep meaning that people instantly understand.