COELOSTAT
coelostat
(noun) optical device used to follow the path of a celestial body and reflect its light into a telescope; has a movable and a fixed mirror
Source: WordNet® 3.1
Etymology
Noun
coelostat (plural coelostats)
(astronomy) A device that rotates a telescope so as to keep its orientation constant with relation to the stars.
Source: Wiktionary
Recent Word Finds
Word of the Day
2 March 2025
LOITER
(verb) be about; “The high school students like to loiter in the Central Square”; “Who is this man that is hanging around the department?”
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