Cometarium

• (n.) An instrument, intended to represent the revolution of a comet round the sun.
Found on http://thinkexist.com/dictionary/meaning/cometarium/

Cometarium

Com`e·ta'ri·um noun [ New Latin ] (Astron.) An instrument, intended to represent the revolution of a comet round the sun. Hutton.
Found on http://www.encyclo.co.uk/webster/C/114
No exact match found