Share this entry
coelostat Syllabification: coe·lo·stat
Pronunciation: /ˈsēləˌstat/

Definition of coelostat in English:


An advanced version of a heliostat, having a rotating mirror that continuously reflects the light from the same area of sky, allowing the path of a celestial object to be monitored.
Example sentences
  • This error can be reduced substantially by choosing the coelostat position and time interval.
  • Back in Ottawa, a specially designed shed with a roll off section housed the coelostat for almost 70 years.
  • To create rotating images in the full 360-degree range, two sets of coelostats can be combined, each compensating for the dead zone of the other.


Late 19th century: formed irregularly from Latin caelum 'sky' + -stat.

Definition of coelostat in:
Share this entry

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.

Subscribe to remove ads and access premium resources