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) \

Definition of planetarium

1 : a model or representation of the solar system
2a : 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 From colorful fashion districts, like Harajuku, to a planetarium atop a skyscraper in Ikebukuro, this version of Tokyo has a little something for everyone. Shelly Tan, Washington Post, "Five sensational vacation destinations from the virtual worlds of video games," 25 Feb. 2021 The nature center is home to a range of educational programs, a planetarium, an interactive nature discovery room and exhibits highlighting the Chesapeake Bay watershed and local forest animals, as well as several outdoor walking trails. baltimoresun.com, "Guide to Howard County 2021: 30 places to take the kids," 23 Feb. 2021 Thaddeus LaCoursiere, a planetarium educator for the Bell Museum at the University of Minnesota, identified the plummeting object as a bolide, an extremely bright meteor that often explodes upon engaging Earth's atmosphere. Paul Walsh, Star Tribune, "Streaking meteor's predawn flash stars in an arresting video for Minnesota sheriff's deputy," 16 Dec. 2020 According to Facebook, the event, hosted by the planetarium’s manager and astronomer, reached more than 1.7 million interested respondents. Emily Wright, BostonGlobe.com, "Visiting Venice, without leaving home," 10 Feb. 2021 The companies are some of the earliest pioneers of virtual reality, interactive VR and planetarium projection technology. Dom Difurio, Dallas News, "New tech group backed by Dallas billionaire Steve Winn emerges to deliver the theater of the future," 26 Jan. 2021 If skies are cloudy an indoor planetarium presentation will be held. Joan Rusek, cleveland, "Happy New Year, now it is time to start something new: Valley Views," 28 Dec. 2020 Not only has there been a notable uptick in subscribers, says planetarium director Dr. Schmoll, but many people who let their subscription lapse a decade or two ago have also renewed it this year. Eva Botkin-kowacki, The Christian Science Monitor, "Telescope sales and stargazers are both looking up these days," 18 Dec. 2020 For the winter season, a new production about space blizzards will take place in the museum’s planetarium. Anne Nickoloff, cleveland, "16 things to do in Cleveland this weekend, Dec. 25-27," 24 Dec. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'planetarium.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of planetarium

1860, in the meaning defined at sense 1

Keep scrolling for more

Learn More about planetarium

Time Traveler for planetarium

Time Traveler

The first known use of planetarium was in 1860

See more words from the same year

Statistics for planetarium

Last Updated

5 Mar 2021

Cite this Entry

“Planetarium.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/planetarium. Accessed 6 Mar. 2021.

Style: MLA
MLA Chicago APA Merriam-Webster

Keep scrolling for more

More Definitions for planetarium

planetarium

noun

English Language Learners Definition of planetarium

: a building or room in which images of stars, planets, etc., are shown on a high, curved ceiling

planetarium

noun
plan·​e·​tar·​i·​um | \ ˌpla-nə-ˈter-ē-əm How to pronounce planetarium (audio) \

Kids Definition of planetarium

: a building in which there is a device for projecting the images of heavenly bodies on a ceiling shaped like a dome

More from Merriam-Webster on planetarium

Nglish: Translation of planetarium for Spanish Speakers

Britannica.com: Encyclopedia article about planetarium

Comments on planetarium

What made you want to look up planetarium? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

Test Your Vocabulary

Who Knew?

True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
 AlphaBear 2

Spell words. Make bears.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!