What Is a Projector? Definition, Uses & Examples

Meaning 1：Projector (Projector)

Projector 🔊

/prəˈdʒɛktər/

A machine that makes images from a computer or phone appear large on a wall or screen.

Projector 🔊

➕

/prəˈdʒɛktər/

A machine that enlarges and displays images or videos from a source onto a flat surface.

📁 Category：Technological Inventions 🔖 Level：Beginner

📘 Details & Usage

📖 Root Explanation

From Latin 'projectus' (thrown forward) + '-or' (agent suffix).

💡 Mnemonic

Think 'project' + 'or' = a device that projects images onto a surface.

📖 Example

For our history class tomorrow, the teacher turned on the projector to show us pictures of ancient pyramids. 🔊 For our history class tomorrow, the teacher turned on the projector to show us pictures of ancient pyramids.

🔗 Collocations

digital projector – a projector that uses digital technology

projector screen – the surface on which the projector displays images

overhead projector – a type of projector that shines light through transparent sheets

🔄 Synonyms

display device (n.) – any equipment that shows visual information

beamer (n.) – informal term for a video projector

🚫 Antonyms

absorber (n.) – something that takes in light instead of projecting it

🌱 Derivatives

project (v.) – to cause light or an image to fall on a surface

projection (n.) – the act of projecting or an image produced

📖 Cultural Story

Evolved from Latin 'proicere' (to throw forward). In 1890s, 'projector' was first used for magic lanterns, later for film and digital image display.