/ Dictionary / Index C composition series: Meaning and Definition of Find definitions for: composi'tion se"ries Pronunciation: [key] — Math. Math. a normal series of subgroups in which no additional subgroups can be inserted. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. composition of forces compositor Related Content Daily Word Quiz: gregarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language