Merriam-Webster Online Dictionary
planetarium (noun)1.
a model or representation of the solar system
2.
a) an optical device for projecting various celestial images and effects
b) a building or room housing such a projector
Planetarium
You may also like
DEF: A small area in the desert where there is water and vegetation.
DEF: a work of art such as a painting, film, or book that is made with great skill. EX: The Mona Lisa […]