noun
: one of numerous periodic comets whose times of revolution around the sun range from 3.3 years (as for Encke's comet) to a few dozen years
noun
: one of numerous periodic comets whose times of revolution around the sun range from 3.3 years (as for Encke's comet) to a few dozen years
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012