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 observability (audio) \ noun
observable noun
observably \ əb-​ˈzər-​və-​blē How to pronounce observably (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 This footage is truly unique, since this view of the sun is not observable on earth. Andrea Romano, Travel + Leisure, "This Timelapse Video Shows How Our Sun Has Changed Over 10 Years," 1 July 2020 Nothing observable in the natural world, including the interrelationship of men to each other, and men to women, could justify the hierarchies that played out so insidiously in his age, and ours. Philip Kennicott, Washington Post, "What do Thomas Jefferson, a mastodon skeleton and Alexander von Humboldt have in common? The answer is locked inside the Smithsonian.," 1 July 2020 This is only observable for very clean mechanical oscillators, like the one that the researchers have built. Chris Lee, Ars Technica, "Tiny pendulum may reveal gravity’s secrets," 26 June 2020 Instead of single experiments staring at a handful of stars, today’s quests for contact are nearing the ability to monitor the entire observable sky for signals, all the time. Nadia Drake, National Geographic, "My dad launched the quest to find alien intelligence. It changed astronomy.," 19 June 2020 No longer observable by telescopes as of January 2018, many have speculated what 'Ouamumua is. Fox News, "Mysterious interstellar 'Oumuamua could be made of something almost unheard of in science," 2 June 2020 The dye, which would be invisible to the naked eye but observable through a specialized cellphone app using infrared light, would keep a record of a child's vaccines. Matthew Brown, USA TODAY, "Fact check: Bill Gates is not planning to microchip the world through a COVID-19 vaccine," 13 June 2020 Boston College sociology professor Juliet Schor, who studies consumerism, says there has already been an observable spike in car sales in China post-lockdown. Kate Knibbs, Wired, "The Pandemic Is Transforming the Rental Economy," 8 June 2020 Unlike 'Ouamuamua, comet 2I/Borisov will be observable for an extended period of time, an idea that has excited astronomers. Fox News, "Mysterious interstellar comet Borisov survived its encounter with the sun, new study says," 6 June 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

5 Jul 2020

Cite this Entry

“Observable.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/observable. Accessed 8 Jul. 2020.

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More Definitions for observable


How to pronounce observable (audio)

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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