/ Dictionary / Index S sea foam: Meaning and Definition of Find definitions for: sea' foam" Pronunciation: [key] the foam of the sea. meerschaum (def. 1). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. seafloor seafood Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language