Pronunciation: (sOO"pur-skrip'shun), [key]
1. the act of superscribing.
2. something that is superscribed.
3. an address on a letter, parcel, or the like.
4. Pharm.the sign Rx, meaning “take,” at the beginning of a prescription.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.