nucleus

noun

ˈnü-klē-əs How to pronounce nucleus (audio)
Definition of nucleusnext
1
as in center
a thing or place that is of greatest importance to an activity or interest a college campus that was a nucleus of opposition to the war

Synonyms & Similar Words

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2
as in core
the central part or aspect of something under consideration the nucleus of the movement's methodology has always been passive resistance

Synonyms & Similar Words

Example Sentences

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.
Recent Examples of nucleus In a smaller number of these interactions, a photon may not break apart the nucleus but strike only a nucleon, generating no ‘forward’ neutrons. — Ameya Paleja, Interesting Engineering, 2 Oct. 2026 In the early 1930s, scientists were just beginning to discover the extraordinary world hidden inside the atom, which is made up of a dense center, called the nucleus, with electrons orbiting around it. — Andrea Richard, The Conversation, 2 Oct. 2026 Clouds come into being via condensation nuclei, tiny aerosol particles floating around in the atmosphere. — Elizabeth Rayne, ArsTechnica, 1 Oct. 2026 Bednar, who has coach the Avalanche to a 445–262–75 record during his tenure, led the team to a Stanley Cup title in 2022 behind a nucleus that included Cale Makar, Nathan MacKinnon and captain Gabriel Landeskog. — ABC News, 30 Sep. 2026 See All Example Sentences for nucleus
Recent Examples of Synonyms for nucleus
  1. center
  2. core
  3. hub
  4. heart
  5. capital
  6. essence
  7. mecca
  8. root
Noun
  • For years, hospitals have been buying and building outpatient centers, and then funneling more care to them.
    — Bob Herman, STAT, 5 Oct. 2026
  • An institution built explicitly to neutralize biological catastrophes is now at the center of one.
    — Mrigakshi Dixit, Interesting Engineering, 5 Oct. 2026
Definition of center
Noun
  • The safety filing delivers the core engineering and operational data needed for federal oversight.
    — Aman Tripathi, Interesting Engineering, 3 Oct. 2026
  • Sayegh also puts her staying power down to her father’s influence, which instilled core values like honoring deals, treating people with respect and booking movies based on audience demand and not personal taste.
    — Etan Vlessing, HollywoodReporter, 3 Oct. 2026
Definition of core
Noun
  • Not to be outdone, Celsius, another prominent energy drink, has partnered with ESPN to sponsor College GameDay, the hub of the let’s-have-fun-and-watch-TV-sports-all-day movement.
    — Kent Sepkowitz, STAT, 5 Oct. 2026
  • DriVe2X sees potential applications in mobility hubs, apartment buildings, and single-family houses.
    — New Atlas, New Atlas, 4 Oct. 2026
Definition of hub
Noun
  • Brockman’s message received 40 hearts, five checkmarks, and three thank-you emojis.
    — Garrison Lovely, semafor.com, 2 Oct. 2026
  • Many dietary recommendations overlap with long-standing heart-health advice, such as eating more fruits, vegetables and fish.
    — Deirdre Bardolf, FOXNews.com, 2 Oct. 2026
Definition of heart
Noun
  • Otthon Centrum analyst Gábor Soóki-Tóth said Tihany is one of the most expensive places in Hungary to buy a vacation property — with prices outstripping those in the nation's capital.
    — Lucy Handley, CNBC, 7 Oct. 2026
  • Devin Jacob Ballard, 20, who is stationed at Futenma Air Station, on suspicion of strangling Anna Yagi, 39, at a hotel in the island's capital city, Naha, early Saturday and stealing her wallet and backpack.
    — Arkansas Online, Arkansas Online, 7 Oct. 2026
Definition of capital
Noun
  • The bones, essence, and layering of that apartment form a mini masterclass in design.
    — Kelly Allen, Architectural Digest, 6 Oct. 2026
  • In the morning, reach for your cleanser or simply rinse the skin with water, then proceed with a hydrating serum or essence (if desired), moisturizer, and SPF.
    — Kara Nesvig, Allure, 2 Oct. 2026
Definition of essence
Noun
  • Named for the massive cliffs that stretch across 32 miles of shoreline, Calvert Cliffs is also a mecca for fossil hunters.
    — Katie Riley, Southern Living, 20 Sep. 2026
  • But for lovers of all things sweet and creamy, Cheesecake Funk is today a veritable mecca for those in the know.
    — David Farley, Bon Appetit Magazine, 15 Sep. 2026
Definition of mecca
Noun
  • Supporters of the new approach say mandatory treatment addresses root causes, while research shows Housing First helps people remain housed.
    — Laura Ungar, Los Angeles Times, 30 Sep. 2026
  • The clothing brand, known for its buttery soft denim pants, started in 2002 with the aim to combine British roots with the energy of New York City’s fashion with a modern twist.
    — Noelle Alviz-Gransee, Kansas City Star, 30 Sep. 2026
Definition of root

Browse Nearby Words

nuclei
nucleus
nude
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Cite this Entry

“Nucleus.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/nucleus. Accessed 8 Oct. 2026.

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More from Merriam-Webster on nucleus

Britannica.com: Encyclopedia article about nucleus

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