/ Dictionary / Index S seriatim: Meaning and Definition of Find definitions for: se•ri•a•tim Pronunciation: (sēr"ē-ā'tim, ser"-), [key] — adv., adj. in a series; one after another. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: seriatim (Thesaurus) seriate seriation Related Content Daily Word Quiz: pundit Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language