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submillimeter

American  
[suhb-mil-uh-mee-ter] / sʌbˈmɪl əˌmi tər /

adjective

  1. less than a millimeter in size.

    a submillimeter wave.


Etymology

Origin of submillimeter

First recorded in 1950–55; sub- + millimeter

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Ortega-Jiménez conducted dozens of experiments, recording them with a special high-speed camera capable of capturing the midair trajectories of the submillimeter worms, which are essentially invisible to the human eye, at 10,000 frames per second.

From Science Daily • Oct. 15, 2025

They found that the submillimeter emission in most of sample galaxies are very compact, with surface brightness profiles deviating significantly from those of exponential disks.

From Science Daily • Dec. 5, 2024

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.

From Scientific American • Jun. 15, 2023

Just as at other wavelengths, the Cow’s submillimeter signal remained high and steady for several weeks, then began to tail off.

From Science Magazine • Jan. 11, 2019

"It’s possible that all galaxies of this mass would become submillimeter galaxies, and if that’s true, the numbers work out right to match the abundances of how many people have actually observed," said Narayanan.

From The Verge • Sep. 23, 2015

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