/ Dictionary / Index S sarcoplasm: Meaning and Definition of Find definitions for: sar•co•plasm Pronunciation: (sär'ku-plaz"um), [key] — n. Biol. the cytoplasm of a striated muscle fiber. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: sarcoplasm (Thesaurus) sarcophile sarcoplasmic reticulum Related Content Daily Word Quiz: designate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language