/ Dictionary / Index A A/cs pay.: Meaning and Definition of Find definitions for: A/cs pay. Pronunciation: [key] accounts payable. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. A.C.S.C., A/cs rec. Related Content Daily Word Quiz: soporific Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language