Wiktionary
planetariums
n. (plural of planetarium English)
Usage examples of "planetariums".
The holoscope had supposedly been installed in the auditorium because it was donated to the expedition by a Japanese firm for purposes of advertising the product to planetariums on Earth.
Science fiction writers went to Star Trek Conventions, planetariums, and toured NASA.
Several million people visit planetariums in North America and Britain each year.
Benar’s halogen lamp - designed for single rooms, not hundred-thousand-year-old planetariums - thousands of tiny points of light and hundreds of brighter ones glittered palely above them.
He'd practiced the techniques in planetariums on the ground, and in Moonlab.