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

Definition of observable

2 : capable of being observed : discernible

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Other Words from observable

observability \ əb-​ˌzər-​və-​ˈbi-​lə-​tē How to pronounce observable (audio) \ noun
observable noun
observably \ əb-​ˈzər-​və-​blē How to pronounce observable (audio) \ adverb

Synonyms & Antonyms for observable



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Examples of observable in a Sentence

the size of the observable universe scientists often work with phenomena that are not directly observable
Recent Examples on the Web The supposition that an earlier and stricter shutdown would have appreciably suppressed the virus may be a comforting counterfactual but bears no relationship to observable reality. Barton Swaim, WSJ, "‘The Premonition’ Review: A Pandemic of Experts," 3 May 2021 Only his eyes were observable, darting back and forth as the judge read the verdict. Laura Kusisto, WSJ, "Derek Chauvin’s Trial Was an Experiment in Pandemic Justice," 20 Apr. 2021 These findings are bolstered by the Scotish study, too—the effect of lower hospitalisations among vaccinated groups should be observable in the aggregate data. The Economist, "Daily Chart The benefits of a rapid vaccine roll-out," 22 Feb. 2021 Would those deviations have observable effects and possibly explain some of what Ho and her colleagues are seeing in the unusual stars? Scientific American, "Readers Respond to the December 2020 Issue," 26 Mar. 2021 Any light that would escape the black hole would be stretched like a slinky from the dark star’s gravitational pull, an observable phenomenon scientists call redshift. Tim Childers, Popular Mechanics, "Black Holes May Not Be Black. Or Even Holes.," 18 Mar. 2021 The idea that many illnesses are caused by an observable pathogen, which produces distinct and predictable symptoms, had a dramatic clarity to it. Meghan O'rourke, The Atlantic, "The Quest to Unlock the Mysteries of Long COVID," 8 Mar. 2021 The other has made allowances based on Bitcoin’s unique qualities and observable data. Pete Rizzo, Forbes, "The Bitcoin Bubble Myth," 4 Mar. 2021 For 2020, though, the Christmas star will be from Jupiter and Saturn, which haven’t been this close in the observable night sky since the year 1226, back when St. Francis of Assisi was still kicking. Richard Tribou, orlandosentinel.com, "Like the Star of Bethlehem: Jupiter and Saturn to get cozy in night sky," 18 Dec. 2020

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

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First Known Use of observable

1589, in the meaning defined at sense 2

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Time Traveler for observable

Time Traveler

The first known use of observable was in 1589

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Statistics for observable

Last Updated

7 May 2021

Cite this Entry

“Observable.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/observable. Accessed 13 May. 2021.

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More Definitions for observable



English Language Learners Definition of observable

: possible to see or notice : able to be observed


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

Kids Definition of observable

: noticeable Her cat's shape was observable under the blanket.

Other Words from observable

observably \ -​blē \ adverb

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