submillimeter

adjective

sub·​mil·​li·​me·​ter ˌsəb-ˈmi-lə-ˌmē-tər How to pronounce submillimeter (audio)
: being less than a millimeter in diameter or wavelength
a submillimeter particle
a submillimeter radio wave

Examples of submillimeter in a Sentence

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 addition, some of the puzzle-piece-like parts of the vacuum vessel—intended to fit together with submillimeter precision—proved not to be manufactured as precisely as needed. Charles Seife, Scientific American, 15 June 2023

Word History

First Known Use

1954, in the meaning defined above

Time Traveler
The first known use of submillimeter was in 1954

Dictionary Entries Near submillimeter

Cite this Entry

“Submillimeter.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/submillimeter. Accessed 22 Dec. 2024.

Love words? Need even more definitions?

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