/ Dictionary / Index S Southend-on-Sea: Meaning and Definition of Find definitions for: South•end-on-Sea Pronunciation: (south'end"on-sē', -ôn-), [key] — n. a seaport in SE Essex, in SE England, on Thames estuary. 159,400. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. South El Monte South Equatorial Current Related Content Daily Word Quiz: procrastinate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language