the study of the formation, meaning, and use of words and of idiomatic combinations of words. lexicology.
Confidence votes 361. A prescription number is a number that the pharmacy assigns to each prescription in order to keep track of them. 3 people found this useful.
If the Rx was written in July, it is still valid. Most Rx's are good for a year and NO Rx expires before 6 months unless the Dr. revokes it or no longer has a license to prescribe at the time you try to fill it. Here are a few guidelines for Rx's: The length of time that a prescription is good for depends on the medication and the doctor.