/ Dictionary / Index A arithmetician: Meaning and Definition of Find definitions for: a•rith•me•ti•cian Pronunciation: (u-rith"mi-tish'un, ar"ith-), [key] — n. an expert in arithmetic. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: arithmetician (Thesaurus) arithmetic arithmetic/logic unit Related Content Daily Word Quiz: arboreal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language