planetarium | ||
1. | [ noun ] (physics,astronomy,optics) an optical device for projecting images of celestial bodies and other astronomical phenomena onto the inner surface of a hemispherical dome | |
Related terms: | optical_device | |
2. | [ noun ] (astronomy) a building housing an instrument for projecting the positions of the planets onto a domed ceiling | |
Related terms: | building | |
3. | [ noun ] an apparatus or model for representing the solar systems | |
Related terms: | model model orrery | |
Similar spelling: |
planetary planetary_gear planetal planet_gear plundering plant_part planetesimal plunderer planetoid |