Adjective
Pertaining to, or resembling, a comet.
Source: Webster's dictionaryA few objects have ended up being dual-listed because they were first classified as minor planets but later showed evidence of cometary activity. Source: Internet
A coronal mass ejection carried the cometary material to Ulysses. Source: Internet
At the time of its discovery, Chiron was close to aphelion, whereas the observations showing a coma were done closer to perihelion, perhaps explaining why no cometary behavior had been seen earlier. Source: Internet
He read the apparition as a cometary portent of doom foreshadowing the imminent fall of Sultan Zayn al-Abidin (AD 1418/1420–1470). Source: Internet
Infrared spectroscopic observations made by NASA's Spitzer Space Telescope of the central star of the Helix Nebula suggest the presence of a dust cloud, which may be caused by cometary collisions. Source: Internet
Debris disk In 2004, a team of UK astronomers led by Jane Greaves discovered that Tau Ceti has more than ten times the amount of cometary and asteroidal material orbiting it than does the Sun. Source: Internet