as in imperceptible
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Recent Examples of unobservable
With enough data on the correlations between skulls and faces, Nilsson notes, a neural network could pick up patterns that are unobservable to even the keenest human eye, vastly improving predictions of facial structure.
—
Cody Cottier, Discover Magazine, 7 Feb. 2025
These differences in neural activity suggest that autistic individuals may rely less on mental state information, which is unobservable and abstract, when processing social interactions and more on tangible, concrete details.
—Trystan Loustau and Liane Young, TIME, 9 Jan. 2025
That sets the ultimate limit of what’s in our observable Universe, and whatever part is unobservable, beyond that, can only be inferred, not directly measured.
—Big Think, 14 June 2024
The formula could be used to infer what was really happening during a collision, even during the unobservable interim moments.
—Quanta Magazine, 23 May 2024
All are using shifts in gravitational waves – the ripples created in spacetime (yes, really) – to observe previously unobservable things and events in the universe.
—Andre Mouchard, Orange County Register, 19 May 2024
For Davies, the potential to test the effect could open up exciting new doors for both theoretical and applied physics, further validating nigh-unobservable phenomena predicted by theorists while expanding the tool kit experimentalists can use to interrogate nature.
—Joanna Thompson, Scientific American, 20 May 2022
The team say that a noise level of just 50ppm would make the technosignature unobservable, regardless of how long the observatory studied Trappist-1e.
—The Physics Arxiv Blog, Discover Magazine, 28 Feb. 2022
By the start of this era, the mysterious substance acting in opposition to gravity called dark energy will have driven everything in the universe apart so much that each individual black dwarf would be surrounded by vast darkness: The supernovae would even be unobservable to each another.
—Adam Mann, Science | AAAS, 11 Aug. 2020
Cody Cottier, Discover Magazine, 7 Feb. 2025
These differences in neural activity suggest that autistic individuals may rely less on mental state information, which is unobservable and abstract, when processing social interactions and more on tangible, concrete details.
—Trystan Loustau and Liane Young, TIME, 9 Jan. 2025
That sets the ultimate limit of what’s in our observable Universe, and whatever part is unobservable, beyond that, can only be inferred, not directly measured.
—Big Think, 14 June 2024
The formula could be used to infer what was really happening during a collision, even during the unobservable interim moments.
—Quanta Magazine, 23 May 2024
All are using shifts in gravitational waves – the ripples created in spacetime (yes, really) – to observe previously unobservable things and events in the universe.
—Andre Mouchard, Orange County Register, 19 May 2024
For Davies, the potential to test the effect could open up exciting new doors for both theoretical and applied physics, further validating nigh-unobservable phenomena predicted by theorists while expanding the tool kit experimentalists can use to interrogate nature.
—Joanna Thompson, Scientific American, 20 May 2022
The team say that a noise level of just 50ppm would make the technosignature unobservable, regardless of how long the observatory studied Trappist-1e.
—The Physics Arxiv Blog, Discover Magazine, 28 Feb. 2022
By the start of this era, the mysterious substance acting in opposition to gravity called dark energy will have driven everything in the universe apart so much that each individual black dwarf would be surrounded by vast darkness: The supernovae would even be unobservable to each another.
—Adam Mann, Science | AAAS, 11 Aug. 2020
Recent Examples of Synonyms for unobservable
Adjective
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By sinking the building into the ground, the architects have created a space that remains almost imperceptible from above.—
New Atlas,
New Atlas,
14 Mar. 2025
-
And the sorts of dollar amounts for this work — for wildlife conservation, overall — are almost imperceptible compared to other federal line items.—
Benji Jones,
Vox,
26 Feb. 2025
Adjective
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The play is now set in a purposely indistinct time period.—
Christopher Arnott,
Hartford Courant,
2 Mar. 2025
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Often, the ad is for an indistinct mobile game featuring a woman with a freezing baby who must choose between spending her fifty gold coins on either building a working fireplace or repairing a broken window that’s letting in an icy breeze.—
Mathew Rodriguez,
Them,
11 Feb. 2025
Adjective
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Except that could be slim enough to be unnoticeable in the hand, but thick enough to handle a bigger cell inside.—
David Phelan,
Forbes,
11 Mar. 2025
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As a result, any visible auroras will likely be faint and possibly unnoticeable to the naked eye because of competition from a bright moon.—
Chandelis Duster,
NPR,
14 Feb. 2025
Adjective
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This quality of presencing the future opens one to the boundless field—the indiscernible fog—out of which presence emerges, something mysterious and beyond naming, but pointed to by many names: God, Source, universal Mind, emptiness or absolute absence.—
Ginny Whitelaw,
Forbes,
1 Mar. 2025
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Patterns of play have been largely indiscernible, and there’s little cohesion between the organs of defense, midfield and attack.—
Ben Church,
CNN,
28 Oct. 2024
Cite this Entry
“Unobservable.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/unobservable. Accessed 17 Mar. 2025.
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