# hologram

/ˈhɑɫəˌɡɹæm/ (US) · /hˈɒləɡɹˌæm/ (UK) · CEFR B2 · Noun

Source: https://englishreference.com/word/hologram
Updated: 2026-05-08

## Definition

a special kind of 3D image made with light. It looks like a solid object that you can see from different sides, even though it is just a picture.

For teachers: a three-dimensional image formed by the interference of light beams from a laser or other coherent light source. Often used to describe digital projections that simulate physical presence.

## Examples

- The credit card has a small hologram to prevent people from making fakes.
- During the concert, a hologram of the late singer appeared on stage to perform with the live band.
- Advanced medical imaging now allows surgeons to examine a hologram of a patient's heart before they begin a complex operation.

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