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Definition of lightbox

lightbox

/ˈlaɪt.bɑːks/
light · box

Plural:lightboxes
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lightbox Lexical Profile

lightbox Game Scores & Validity

• noun

1

A web design component that displays an image, video, or dialog box in a centered overlay, simultaneously dimming the rest of the webpage.

Example

"When you click on the gallery thumbnail, the full-resolution image opens in a lightbox."


2

An illuminated flat surface or enclosure used for examining translucent items, such as photographic film, slides, or medical X-rays.

Example

"The radiologist placed the patient's chest X-ray on the lightbox to examine it for abnormalities."


3

A translucent enclosure or tent used in studio photography to surround a subject and provide even, diffused lighting while minimizing harsh shadows.

Example

"To achieve a seamless white background for the product catalog, the photographer set up a small lightbox before shooting the jewelry."

Synonyms
View all synonyms for lightbox

Word Origin & Etymology

A compound of 'light' and 'box', originating in the mid-20th century for physical illuminated enclosures used in photography and medicine, and later adapted in the 2000s to describe digital web interface overlays.

Cite this Entry


Wordmom. (2026). Definition of Lightbox. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/lightbox
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