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.
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 For the most accurate location-specific information, consult online planetariums like SkySafari Pro, Stellarium and The Sky Live. Jamie Carter, Forbes, 4 Nov. 2024 Visitors can see the Flandrau's science exhibits from 10 a.m. to 2 p.m. for $5, followed by special planetarium shows for $5 per ticket. Tiffany Acosta, The Arizona Republic, 29 Mar. 2024 Following the conversations, there was an event for children of all ages involving an indoor planetarium that spoke of the night sky and about the challenges of a flight to Mars. Tom Teicholz, Forbes, 22 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 15 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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