noun (plural planetariums or planetaria /-rɪə/)
- 1A domed building in which images of stars, planets, and constellations are projected for public entertainment or education.More example sentences
- He announced to his wife that he was going to educate the public by building a planetarium in the back room of their house.
- Although not terribly well known, the Observatorio Astronomico de Mallorca has a working planetarium and offers public skywatching using telescopes sufficiently powerful to study Jupiter, Mars, Saturn, Venus and Mercury.
- Cosmic Microwave Background: The New Cosmology and other elements of the AstroBulletin are made available to museums, science centers, planetariums, and other public spaces nationwide and around the world.
- 1.1A device used to project images of stars, planets, and constellations.More example sentences
- While astronomers were radically expanding their view of the universe in the early part of the twentieth century, a new invention was also fueling a rising public enthusiasm: the planetarium.
- A planetarium can do stars and project slides on the ceiling, maybe make a laser dance in one place, and that's about it.
- The planetarium projects bright stars and constellations visible in the Southern Hemisphere on your walls and ceilings.
mid 18th century: modern Latin, from Latin planetarius 'relating to the planets'.
More definitions of planetariumDefinition of planetarium in:
- The US English dictionary