omega

noun
ome·​ga | \ ō-ˈmā-gə How to pronounce omega (audio) , -ˈmē- How to pronounce omega (audio) , -ˈme- How to pronounce omega (audio) \

Definition of omega

1 : the 24th and last letter of the Greek alphabet — see Alphabet Table
2 : the extreme or final part : end
3a : a negatively charged elementary particle that has a mass 3270 times the mass of an electron

called also omega minus

b : a very short-lived unstable meson with mass 1532 times the mass of an electron

called also omega meson

Examples of omega in a Sentence

Recent Examples on the Web Many of the disease-fighting benefits of fish come from its heart healthy omega 3 fatty acids. Stefani Sassos, Ms, Rdn, Cso, Good Housekeeping, "Everything You Need to Know About the Pescatarian Diet," 25 May 2020 Fish isn’t your only source for healthy omega fats. Nicole Clancy, Better Homes & Gardens, "7 of the Best Brain Foods to Improve Your Memory and Concentration," 25 June 2020 Along with turmeric, this Hanoi-style salmon recipe is rich with omega 3 fatty acids that can reduce inflammation and enhance white blood cell activity. Drake Wilson, Sunset Magazine, "The Recipes You Should Be Cooking This February," 10 Feb. 2020 After that, the trainee lies down and an electrode is attached to his forehead and finger for an omega brain-wave reading. Joe Pappalardo, Popular Mechanics, "The Air Force Is Changing How Special Ops Fighters Are Trained," 12 Feb. 2019 The brain and the retina in the eye are omega 3 organs. Anchorage Daily News, "Seafood will get more attention in development of new U.S. dietary guidelines," 10 Sep. 2019 Pepe Larraz/Marvel Hickman has also reintroduced the concept of omega-level mutants, under a taxonomical system that identifies mutants by their power levels. Alex Abad-santos, Vox, "House of X restores an air of myth and mystique to Marvel’s Merry Mutants ahead of their arrival in the MCU.," 2 Aug. 2019 As a rule of thumb, stick to a 1:1 ratio of omega 3 to omega 6 in your diet by eating equal amounts of foods that contain each. NBC News, "The best oils to use for cooking, according to nutritionists," 24 July 2019 This latest heat wave is being triggered by an omega block, a type of upper-level high-pressure pattern resembling the Greek letter Ω that blocks and diverts the jet stream, the Weather Channel said. Doyle Rice, USA TODAY, "Paris could break all-time heat record this week as scorching temps bake Europe," 23 July 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'omega.' 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 omega

15th century, in the meaning defined at sense 1

History and Etymology for omega

Middle English, from Greek ō mega, literally, large o

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Time Traveler for omega

Time Traveler

The first known use of omega was in the 15th century

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Statistics for omega

Cite this Entry

“Omega.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/omega. Accessed 22 Oct. 2020.

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More Definitions for omega

omega

noun
How to pronounce omega (audio) How to pronounce omega (audio) How to pronounce omega (audio)

English Language Learners Definition of omega

: the 24th and last letter of the Greek alphabet

omega

adjective
ome·​ga
variants: or ω- \ ō-​ˈmeg-​ə, -​ˈmā-​gə, especially British ˈō-​meg-​ə \

Medical Definition of omega

: of, relating to, or being a chemical group or position at the end of a molecular chain omega oxidation of fatty acids

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Thesaurus: All synonyms and antonyms for omega

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