/ Dictionary / Index A ASN: Meaning and Definition of Find definitions for: ASN Pronunciation: [key] Army service number. Asn Pronunciation: [key] — Biochem. Biochem. asparagine. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Asmonean Asnières Related Content Daily Word Quiz: exemplary Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language