as in tiny
very small in size
a soft drink with only an infinitesimal amount of caffeine
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Recent Examples of infinitesimal
To tackle the challenge, the team employed advanced interferometry, a technique that merges laser light reflections from mirrors to detect infinitesimal distance changes.
—
Georgina Jedikovska, Interesting Engineering, 10 Oct. 2025
These infinitesimal particles can more directly target ailments, though their size makes creating therapies incredibly difficult.
—Rachyl Jones, semafor.com, 8 Oct. 2025
Performances are solid throughout, notably from Boulane, who turns up the gentlemanly charm by infinitesimal degrees.
—David Rooney, HollywoodReporter, 3 Oct. 2025
That brings us to now, this infinitesimal moment of geological history — one of the most out of control in the history of animal life.
—Peter Brannen, Quanta Magazine, 15 Sep. 2025
See All Example Sentences for infinitesimal
Georgina Jedikovska, Interesting Engineering, 10 Oct. 2025
These infinitesimal particles can more directly target ailments, though their size makes creating therapies incredibly difficult.
—Rachyl Jones, semafor.com, 8 Oct. 2025
Performances are solid throughout, notably from Boulane, who turns up the gentlemanly charm by infinitesimal degrees.
—David Rooney, HollywoodReporter, 3 Oct. 2025
That brings us to now, this infinitesimal moment of geological history — one of the most out of control in the history of animal life.
—Peter Brannen, Quanta Magazine, 15 Sep. 2025
See All Example Sentences for infinitesimal
Recent Examples of Synonyms for infinitesimal
Adjective
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The tiny tip gives you flexibility to fill and shape your brows for a bold look or something more minimal with just a little enhancement and color.—
Alanna Martine Kilkeary,
Glamour,
20 Feb. 2026
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These particles are covered with tiny chain-like structures that interact with metal ions in solution.—
Neetika Walter,
Interesting Engineering,
20 Feb. 2026
Adjective
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With no functional magnetosphere, Mars’ surface radiation is nearly as intense as in deep space, and the paper-thin atmosphere provides little protection from even minuscule meteorites.—
Big Think,
Big Think,
19 Feb. 2026
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Okawara sculpted Beyoncé's nails into a long almond shape with a neutral base color, then detailed each nail with its own minuscule design.—
Kara Nesvig,
Allure,
17 Feb. 2026
Adjective
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In the warm, shallow waters of Mosquito Lagoon, Banana River, and the Indian River Lagoon, microscopic dinoflagellates (a kind of plankton) let off a bioluminescent glow in the water when moved, such as with a paddle stroke.—
Kelsey Glennon,
Southern Living,
18 Feb. 2026
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Among the best places to visit in Puerto Rico are its rare bioluminescent bays, where the water appears to glow at night thanks to microscopic organisms that are stimulated by movement.—
Patricia Doherty,
Travel + Leisure,
17 Feb. 2026
Cite this Entry
“Infinitesimal.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/infinitesimal. Accessed 22 Feb. 2026.
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