/ Dictionary / Index S systematics: Meaning and Definition of Find definitions for: sys•tem•at•ics Pronunciation: (sis"tu-mat'iks), [key] — n. (used with a sing. v.) the study of systems or of classification. the study and classification of organisms with the goal of reconstructing their evolutionary histories and relationships. phylogenetic classification. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: systematics (Thesaurus) systematic phoneme systematism 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