ultrathin
adjective
ul·tra·thin
ˌəl-trə-ˈthin 
: extremely or extraordinarily thin
ultrathin phones
ultrathin fashion models
The molecules ride on the surface like a film of soap and assemble themselves into an ultrathin layer about one-millionth of an inch thick.—
Mike May
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Examples of ultrathin in a Sentence
a new generation of flat-panel TVs that were ultrathin
Recent Examples on the Web
Blending into all skin tones almost seamlessly, Rael’s ultrathin patch offers a covert method for drawing out fluids and protecting the skin from dirt.
—Jenny Berg, Vogue, 14 Sep. 2024
The ultrathin gear was 3 millimeters thick, in contrast to the typical 40 millimeters for down coats.
—Sj Studio, Sourcing Journal, 14 Aug. 2024
Wrap the ultrathin scarf tightly around your neck from the front to the back, then back to the front, and let the long ends hang loose.
—Jana Ackermann, Glamour, 5 Apr. 2024
By harnessing light, my colleagues and I designed a wireless, ultrathin pacemaker that operates like a solar panel.
—Pengju Li, Discover Magazine, 23 Mar. 2024
See all Example Sentences for ultrathin 
Jenny Berg, Vogue, 14 Sep. 2024
The ultrathin gear was 3 millimeters thick, in contrast to the typical 40 millimeters for down coats.
—Sj Studio, Sourcing Journal, 14 Aug. 2024
Wrap the ultrathin scarf tightly around your neck from the front to the back, then back to the front, and let the long ends hang loose.
—Jana Ackermann, Glamour, 5 Apr. 2024
By harnessing light, my colleagues and I designed a wireless, ultrathin pacemaker that operates like a solar panel.
—Pengju Li, Discover Magazine, 23 Mar. 2024
See all Example Sentences for ultrathin
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'ultrathin.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
Dictionary Entries Near ultrathin
Cite this Entry
“Ultrathin.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ultrathin. Accessed 4 Nov. 2024.
Copy CitationMedical Definition
ultrathin
adjective
ul·tra·thin
ˌəl-trə-ˈthin
: exceedingly thin
ultrathin sections for use in electron microscopy
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