/ Dictionary / Index S syllogize: Meaning and Definition of Find definitions for: syl•lo•gize Pronunciation: (sil'u-jīz"), [key] — -gized, -giz•ing. to argue or reason by syllogism. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: syllogize (Thesaurus) syllogistic sylph Related Content Daily Word Quiz: lyceum Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language