Noun icon has 3 senses
  1. icon - (computer science) a graphic symbol (usually a simple picture) that denotes a program or a command or a data file or a concept in a graphical user interface
    --1 is a kind of
    symbol
    --1 is a part of graphical user interface, GUI
  2. picture, image, icon, ikon - a visual representation (of an object or scene or person or abstraction) produced on a surface; "they showed us the pictures of their wedding"; "a movie is a series of images projected so rapidly that the eye integrates them"
    --2 is a kind of representation
    --2 has particulars:
     bitmap, electronic image; chiaroscuro; collage, montage; foil, transparency; iconography; inset; likeness, semblance; panorama, cyclorama, diorama; photograph, photo, exposure, pic; reflection, reflexion; scan, CAT scan; sonogram
  3. icon, ikon - a conventional religious painting in oil on a small wooden panel; venerated in the Eastern Church
    --3 is a kind of painting, picture
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