planetarium

noun

plan·​e·​tar·​i·​um ˌpla-nə-ˈter-ē-əm How to pronounce planetarium (audio)
plural planetariums or planetaria ˌpla-nə-ˈter-ē-ə How to pronounce planetarium (audio)
1
: a model or representation of the solar system
2
a
: an optical device for projecting various celestial images and effects
b
: a building or room housing such a projector

Examples of planetarium in a Sentence

Recent Examples on the Web
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.
For the most accurate location-specific information, consult online planetariums like Stellarium. Jamie Carter, Forbes, 9 Dec. 2024 The vessel also has the Royal Court Theatre, a casino, a gym, a spa, multiple restaurants, bars and cafes, evening entertainment, and the only planetarium at sea (constellations were projected onto a retractable dome on the Illuminations venue’s ceiling). Heather Steinberger, Robb Report, 22 Nov. 2024 The planetarium’s role, though, isn’t just about visual spectacle. Richard Tribou, Orlando Sentinel, 29 June 2024 The award-winning North to Alaska program offers a planetarium experience showcasing the Northern Lights, along with local storytellers, Alaskan seafood dining, glacier tours and shore excursions, connecting travelers to the heart of Alaska’s cultural and natural wonders. Laura Begley Bloom, Forbes, 31 Oct. 2024 See all Example Sentences for planetarium 

Word History

First Known Use

1860, in the meaning defined at sense 1

Time Traveler
The first known use of planetarium was in 1860

Dictionary Entries Near planetarium

Cite this Entry

“Planetarium.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/planetarium. Accessed 22 Dec. 2024.

Kids Definition

planetarium

noun
plan·​e·​tar·​i·​um ˌplan-ə-ˈter-ē-əm How to pronounce planetarium (audio)
plural planetariums or planetaria -ē-ə How to pronounce planetarium (audio)
1
: a device that projects images of heavenly bodies on a ceiling shaped like a dome
2
: a building or room housing a planetarium

More from Merriam-Webster on planetarium

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