/ Dictionary / Index C cross sea: Meaning and Definition of Find definitions for: cross' sea" Pronunciation: [key] — Oceanog., Naut. Oceanog.,Naut. a sea with a choppy surface produced by the intersection of waves from different storms. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. crossruff cross section Related Content Daily Word Quiz: lunar Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language