Planetariums is a 12 letter English word. It's valid Scrabble word worth 15 points. It's valid Words with friends word worth 20 points.
You can make 2951 anagrams from letters in planetariums (aaeilmnprstu).
1765-75; New Latin, noun use of neuter of Latin planētārius planetary; cf. -arium
The dome was lighted to represent a clear night, and, incidentally, all nights are clear in a planetarium.
Ingulfus mentions at the same time a nadir, as he calls it, or planetarium, executed in various metals.
The planets are visible during the day in the planetarium as well as night.
In the school-room there was a planetarium, very neatly finished, set in motion by clock-work.
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