cometarium
nounUK /ˌkɒmɪˈtɛəɹi.əm/ · US /ˌkɑməˈtɛɹi.əm/
Etymology Latin
1
Astronomy, Natural sciences An instrument intended to represent the revolution of a comet around the Sun.
- we have their [comets'] path marked in cometariums formed on the imaginary law of attraction1791, Thomas Vivian, Cosmology. An Enquiry Into the Cause of what is Called Gravitation, Etc.: