/ Dictionary / Index A aerarian: Meaning and Definition of Find definitions for: ae•rar•i•an Pronunciation: (ē-râr'ē-un), [key] — Rom. Hist. Rom. Hist. —adj. of or pertaining to the aerarium. —n. a member of the lowest class of Roman citizens, who paid a poll tax but did not vote. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. aer- aerarium Related Content Daily Word Quiz: alacrity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language