/ Dictionary / Index U undulatus: Meaning and Definition of Find definitions for: un•du•la•tus Pronunciation: (un"d-lā'tus, -dy-), [key] — n. Meteorol. See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. undulatory theory unduly Related Content Daily Word Quiz: fabricate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language