planetarium

noun

an apparatus or model for representing the solar systems

an optical device for projecting images of celestial bodies and other astronomical phenomena onto the inner surface of a hemispherical dome

a building housing an instrument for projecting the positions of the planets onto a domed ceiling

Roots

planetesplanet- · Greek · wanderer

Synonyms for planetarium

orreryn observatoryn coelostatn spectroheliograph coronograph spectrohelioscope coronagraph

Synonyms & related words for planetarium

Find synonyms, related words, and the definition of planetarium — including orrery, observatory, coelostat, spectroheliograph, coronograph, spectrohelioscope. Dendril is a free visual thesaurus that shows them on an interactive map where stronger matches sit closer to the center — no signup, no ads.

Words related to planetarium

Explore words related to planetarium — words associated with it, words that go with it, and its nearest matches in meaning. Related words include astronomy, stargazing, astronomize, uranometry, aphelia, radiogalaxy, evectional, telescopes. Click any word to make it the center of the map and keep exploring the web of connections.

Synonyms for planetarium

Common synonyms for planetarium include orrery, observatory, coelostat, spectroheliograph, coronograph, spectrohelioscope, coronagraph — words that share a close meaning. Hover or tap any word on the map for its definition and part of speech.

Where does planetarium come from?

The word planetarium breaks down into one root of Greek origin: the root planet-, from Greek planetes (“wanderer”). Explore each root to see other English words built from the same source.