- The nail of the thumb.
- Computers An image of a graphic or document that is reduced in size so that it serves as an icon of a larger image. This allows multiple images to be viewed on a screen simultaneously or to be transmitted more rapidly.
- Of, relating to, or of the size of a thumbnail.
- Greatly reduced or limited in scale or scope: a thumbnail sketch; a thumbnail biography.
transitive verbthumb·nailed, thumb·nail·ing, thumb·nails Computers
(third-person singular simple present thumbnails, present participle thumbnailing, simple past and past participle thumbnailed)
thumbnail - Computer Definition
A miniature representation of a page or image that is used to identify a file by its contents. Clicking the thumbnail opens the file. Thumbnails are an option in file managers, such as Windows Explorer, and they are found in photo editing and graphics program to quickly browse multiple images in a folder. In drawing programs and programs that deal with page layouts, thumbnails might be used to rearrange the page order by dragging and dropping them into a different sequence.