: one that scans: such as
a
: a device for sensing recorded data (as in a bar code)
a supermarket scanner
b
: a radio receiver that sequentially scans a range of frequencies for a signal
c
: a device that scans an image (such as a photograph) or document (such as a page of text) especially for use or storage on a computer
d
: a medical device for scanning a living body to collect diagnostic information see also ct scanner

Examples of scanner in a Sentence

a price scanner at a supermarket
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
In digital projection, the resolution is limited by the maximum resolution of the scanner and projector being used. Laura Payne, Encyclopedia Britannica, 15 July 2026 You will still be required to follow the 3-1-1 liquid rule and remove jewelry and electronics before walking through a body scanner. Joey Skladany, Travel + Leisure, 15 July 2026 Deep discovery must use automated scanners to map the full dependency structure of a legacy estate. Chetan Mathur, Forbes.com, 7 July 2026 For robot manufacturers, the certification offers an alternative to traditional 2D laser scanners that are widely used for safety. Jijo Malayil, Interesting Engineering, 6 July 2026 See All Example Sentences for scanner

Word History

First Known Use

1556, in the meaning defined above

Time Traveler
The first known use of scanner was in 1556

Browse Nearby Words

Cite this Entry

“Scanner.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/scanner. Accessed 21 Jul. 2026.

Kids Definition

: one that scans: as
a
: a device that senses recorded information
b
: a radio receiver that scans a range of frequencies for a signal
c
: a device that scans an image or document especially for use or storage on a computer
d
: a device for scanning a living body to collect medical information

Medical Definition

: a device (as a CT scanner) for making scans of a living body

More from Merriam-Webster on scanner

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster