unobservable

adjective

un·​ob·​serv·​able ˌən-əb-ˈzər-və-bəl How to pronounce unobservable (audio)
: incapable of being observed : not observable
particles so small that they are unobservable

Examples of unobservable in a Sentence

Recent Examples on the Web
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.
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 Our capacity for moral reasoning shouldn't depend on what's happening many googols of parsecs away in an unobservable part of the universe. Sean Carroll, Discover Magazine, 11 Feb. 2011 The hyper-expansion of space would not affect the local laws of physics, and any objects receding faster than light would be fundamentally unobservable and hence irrelevant. Corey S Powell, Discover Magazine, 1 May 2013

Word History

First Known Use

1615, in the meaning defined above

Time Traveler
The first known use of unobservable was in 1615

Dictionary Entries Near unobservable

Cite this Entry

“Unobservable.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/unobservable. Accessed 22 Dec. 2024.

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