/ Dictionary / Index A arithmetic/logic unit: Meaning and Definition of Find definitions for: ar'ith•met'ic/log'ic u"nit Pronunciation: (ar'ith-met'ik loj'ik), [key] — Computers. Computers. See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. arithmetician arithmetic mean 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