un·​ob·​serv·​able | \ ˌən-əb-ˈzər-və-bəl How to pronounce unobservable (audio) \

Definition of unobservable

: incapable of being observed : not observable particles so small that they are unobservable

Examples of unobservable in a Sentence

Recent Examples on the Web Staff at the institute, which operates the revolutionary telescope, have put the finishing touches on the public’s first look at the power of Webb to observe what was once unobservable — distant galaxies, the atmospheres of faraway planets. Christine Condon, Baltimore Sun, 11 July 2022 However, some voices in the reader mail have taken me to task for emphasizing maximum range, when—like 0-60 mph acceleration and top speed—the standard is nearly unobservable on a daily basis and therefore irrelevant for the vast majority of users. Dan Neil, WSJ, 22 Apr. 2022 That’s because the helium-3 nucleus moves so little that its motion is essentially unobservable, and the neutrino can’t be detected. Don Lincoln, Forbes, 18 May 2021 For a long time, this was thought to be unobservable, but nature gives us an opportunity where electric and magnetic fields are stronger than anyplace else known: in the immediate vicinity of a neutron star. Ethan Siegel, Forbes, 7 May 2021 Is this about observable or unobservable diversity? Kimberly A. Whitler, Forbes, 18 Apr. 2021 Powell wanted to make monetary policy less reliant on unobservable characteristics of the economy such as r-star and u-star, and to finally deliver on the promise of durable 2% inflation. Peter Coy,, 8 Oct. 2020 There is a profound difficulty at the heart of the science of consciousness: consciousness is unobservable. Gareth Cook, Scientific American, 14 Jan. 2020 Eventually, Peebles’s theories led to the discovery of dark energy, the invisible force that drives the expansion of the universe, and dark matter, the unobservable material that holds galaxies together. Sarah Kaplan, Washington Post, 8 Oct. 2019 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'unobservable.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of unobservable

1615, in the meaning defined above

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The first known use of unobservable was in 1615

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Cite this Entry

“Unobservable.” Dictionary, Merriam-Webster, Accessed 6 Oct. 2022.

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