/ Dictionary / Index U Ursids: Meaning and Definition of Find definitions for: Ur•sids Pronunciation: (ûr'sidz), [key] — n. (used with a pl. v.) Astron. a collection of meteors comprising a meteor shower visible around December 22 and having its apparent origin in the constellation Ursa Major. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. ursid ursiform Related Content Daily Word Quiz: lyceum Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language