ULTRAMICRO Synonyms: 32 Similar and Opposite Words

ultramicro

adjective

Definition of ultramicro

as in micro

Related Words

Relevance

Dissimilar Words

Example Sentences

Recent Examples of Synonyms for ultramicro

Adjective

Its other features include a micro-mesh lining, an adjustable drawstring waist, and two side pockets.

— Eric Twardzik, Robb Report, 10 Aug. 2026
The doctor uses a micro-punch tool to extract these grafts one by one.

— Connie Etemadi, USA Today, 10 Aug. 2026

Definition of micro

Adjective

The amount may be infinitesimal—white sugar and bottled water are sometimes purified with charred animal bones, for instance—but some hypersensitive alpha-gal patients avoid the risk anyway.

— Burkhard Bilger, New Yorker, 29 June 2026
To precisely print transistors at these infinitesimal scales, light with an incredibly short wavelength must be used.

— Rob Toews, Forbes.com, 22 June 2026

Definition of infinitesimal

Adjective

The merch was originally made for OpenAI employees to purchase on an internal site, but the team decided to make a small capsule collection available to the public.

— T.M. Brown, CNN Money, 17 Aug. 2026
Rival online retailers Ozon and Yandex Market use smaller depots spread over a wider network.

— ABC News, ABC News, 17 Aug. 2026

Definition of small

Adjective

The risk is lower in areas such as the Pacific Northwest, where the population is less vulnerable, and Greenland, where fewer people live near glacial lakes.

— Sarah Kuta, Smithsonian Magazine, 10 Feb. 2023
The Cavs are now just 4-7 in games decided by three points or fewer.

— Chris Fedor, cleveland, 31 Jan. 2023

Definition of fewer

Adjective

Even lesser-scale incidents like the Varsity Blues college admissions scandal and the Volkswagen emissions scandal erode trust in the institutions that help make our society possible and push it forward.

— Lindsey Witmer Collins, Forbes.com, 7 Aug. 2025
Toronto’s Fred VanVleet appears to be the top target, but Miami’s Kyle Lowry, Utah’s Mike Conley and, perhaps to a lesser extent, Charlotte’s Terry Rozier have been linked to the team at various points.

— Staff Writer Follow, Los Angeles Times, 3 Feb. 2023

Definition of lesser

Adjective

Many higher education institutions have started offering classes focused on the burgeoning content creation industry over the past couple years, and several have certificate or minor programs.

— ABC News, ABC News, 14 Aug. 2026
On Friday, the United Kingdom Maritime Trade Operations (UKMTO) reported two identical incidents of drone strikes on tankers in Hormuz a day earlier, causing minor damage but no casualties.

— Frank Andrews, CBS News, 14 Aug. 2026

Definition of minor

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.

Browse Nearby Words

ultramasculine

ultramicro

ultramodern

See all Nearby Words

Cite this Entry

Style

“Ultramicro.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/ultramicro. Accessed 20 Aug. 2026.

Copy Citation

Synonyms of ultramicro

adjective

Example Sentences

Browse Nearby Words

Cite this Entry

More from Merriam-Webster

Word of the Day

divulge

Popular in Grammar & Usage

A Who’s Who Regarding ‘Who’s’ and ‘Whose’

7 Pairs of Commonly Confused Words

'A' or 'an'? What about before 'h'? An Indefinite Article Guide

Do you 'say your piece' or 'say your peace'?

Why is '-ed' sometimes pronounced at the end of a word?

Popular in Wordplay

Words from the 'Odyssey'

The Longest Long Words List

It's a Scorcher! Words for the Summer Heat

Is “GIF” Pronounced “Jiff” or “Giff”?

12 Lovely and Unusual Words for the Natural World

Popular

A Who’s Who Regarding ‘Who’s’ and ‘Whose’

Words from the 'Odyssey'

The Longest Long Words List

Games & Quizzes