Reference meaning
planetarium
Last updated
a building housing an instrument for projecting the positions of the planets onto a domed ceiling
Other meanings
2. noun
an optical device for projecting images of celestial bodies and other astronomical phenomena onto the inner surface of a hemispherical dome
3. noun
an apparatus or model for representing the solar systems
Source and scope
This definition is reproduced from Princeton WordNet 3.0, sense 03956157-n, under the WordNet 3.0 License. It has not yet received VocabularyBase editorial review. Read the source and license details.