1. a person who watches television, movies, or other visual media
2. a device used for looking at photographs, slides, or other images
3. a person who looks at or examines something

Examples

• The television show attracted millions of viewers.
• She used a slide viewer to look at her old photographs.
• The museum exhibit drew many viewers throughout the day.
• He adjusted the image viewer to get a clearer picture.
• Online viewers can watch the live stream on the website.
• The art gallery welcomed viewers from around the world.
• She bought a vintage film viewer at the antique store.