Comet

kom′et, n. a heavenly body with an eccentric orbit, having a definite point or nucleus, a nebulous light surrounding the nucleus, and a luminous tail preceding or following the nucleus.— adjs. Com′etary , Comet′ic .— ns. Com′et-find′er , a telescope of low power used to search for comets; Cometog′raphy ; Cometol′ogy . [Gr. komētēs , long-haired— komē , the hair.]