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planetarian

American  
[plan-i-tair-ee-uhn] / ˌplæn ɪˈtɛər i ən /

noun

  1. a staff member at a planetarium.

  2. an inhabitant of a planet.

adjective

  1. of or relating to a planetarian.

Etymology

Origin of planetarian

First recorded in 1720–30; from Late Latin planetari(us) planetary ( def. ) + -an ( def. )

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.