infinitesimal

adjective

(ˌ)in-ˌfi-nə-ˈte-sə-məl How to pronounce infinitesimal (audio)
Definition of infinitesimalnext
as in tiny
very small in size a soft drink with only an infinitesimal amount of caffeine

Synonyms & Similar Words

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Antonyms & Near Antonyms

Example Sentences

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.
Recent Examples of infinitesimal That’s why instances of undocumented immigrants voting are infinitesimal. — Linh Tat, Oc Register, 5 May 2026 Mathematicians can construct a form of calculus without infinity, for instance, cutting infinitesimal limits out of the picture entirely. — Quanta Magazine, 29 Apr. 2026 But consider for a moment what autonomous vehicles actually do that only an infinitesimal number of Maryland drivers actually manage. — John Seng, Baltimore Sun, 30 Mar. 2026 The chances of that are infinitesimal, he’s told. — Natalie Oganesyan, Deadline, 23 Mar. 2026 See All Example Sentences for infinitesimal
Recent Examples of Synonyms for infinitesimal
  1. tiny
  2. minuscule
  3. microscopic
Adjective
  • This allows the hybrid system to operate continuously for days or even weeks with a tiny power system.
    — New Atlas, New Atlas, 18 July 2026
  • That gives the three imminent data centers in Miami-Dade a tinier footprint than the headline makers elsewhere in the state, said Margaret Cook, vice president of water and community resilience at the Houston Advanced Research Center.
    — Alexandra Phelps, Miami Herald, 17 July 2026
Definition of tiny
Adjective
  • The minuscule particles can lead to breathing problems like bronchitis and cause inflammation that aggravates diabetes, heart disease and other health conditions.
    — Dakota Smith, CNN Money, 14 July 2026
  • Scientists at Aalto University in Finland have built the world’s first cyclic heat engine, operating inside a superconducting circuit and using a minuscule amount of heat from a quantum refrigerator to convert it into useful work.
    — Ameya Paleja, Interesting Engineering, 13 July 2026
Definition of minuscule
Adjective
  • With film so much larger than the standard 35mm frame even microscopic flaws show up large.
    — Tania Azhang, Sacbee.com, 18 July 2026
  • Cyclospora is a microscopic parasite that infects food that has come into contact with human feces, most commonly when produce is irrigated or washed with contaminated water.
    — Savannah Peters, Fortune, 18 July 2026
Definition of microscopic

Browse Nearby Words

infinite
infinitesimal
infinitesimally
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“Infinitesimal.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/infinitesimal. Accessed 23 Jul. 2026.

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More from Merriam-Webster on infinitesimal

Nglish: Translation of infinitesimal for Spanish Speakers

Britannica.com: Encyclopedia article about infinitesimal

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