coelostat

noun

coe·​lo·​stat
plural -s
: an instrument consisting of an adjustable plane mirror clock-driven on an axis parallel to the axis of the earth and a second fixed mirror that act together to send light from a celestial body in a fixed direction compare heliostat

Word History

Etymology

International Scientific Vocabulary coelo- (from Medieval Latin caelum sky, heaven, from Latin caelum heaven) + -stat

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

  • More than 250,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

Dictionary Entries Near coelostat

Cite this Entry

“Coelostat.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/coelostat. Accessed 25 Apr. 2024.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!