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Showing results for ultrathin. Search instead for Ultra thin.

ultrathin

American  
[uhl-truh-thin] / ˌʌl trəˈθɪn /

adjective

  1. extremely thin.

    an ultrathin wristwatch.


Etymology

Origin of ultrathin

First recorded in 1945–50; ultra- + thin

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.

It was a pioneer in developing glass fiber, in which threads of ultrathin glass are woven together like a fabric.

From The Wall Street Journal • Feb. 8, 2026

Elsewhere in the plant, workers cut the ingots into ultrathin wafers using diamond wire saws.

From Barron's • Nov. 7, 2025

Biomedical engineers at Duke University have developed a silk-based, ultrathin membrane that can be used in organ-on-a-chip models to better mimic the natural environment of cells and tissues within the body.

From Science Daily • Jun. 6, 2024

Apple had intended the ad to send the opposite message, that its ultrathin iPad Pro could power an array of creative activities that previously required individual tools.

From New York Times • May 9, 2024

An ultrathin gold rope trailed from the fletching.

From "The Son of Neptune" by Rick Riordan