light pen


: a pen-shaped device for direct interaction with a computer through a cathode-ray tube display

Example Sentences

writing with a light pen

Word History

First Known Use

1957, in the meaning defined above

Time Traveler
The first known use of light pen was in 1957

Dictionary Entries Near light pen

Cite this Entry

“Light pen.” Dictionary, Merriam-Webster, Accessed 2 Jun. 2023.

Kids Definition

light pen

: a pen-shaped device that senses light signals and is used to work with information on a computer display screen
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