English edit

Etymology edit

Latin

Noun edit

cometarium (plural cometaria)

  1. (astronomy) An instrument intended to represent the revolution of a comet around the Sun.
    • 1791, Thomas Vivian, Cosmology. An Enquiry Into the Cause of what is Called Gravitation, Etc.:
      we have their [comets'] path marked in cometariums formed on the imaginary law of attraction

References edit