See more synonyms on Thesaurus.com. noun, (used with a singular verb) 1. Biology. the science of heredity, dealing with resemblances and differences of related organisms resulting from the interaction of their genes and the environment.
Rx: A medical prescription. The symbol Rx is usually said to stand for the Latin word recipe meaning to take.. It is customarily part of the superscription (heading) of a prescription.
The symbol Rx has its origin either with the Eye of Horus or Jupiter. People would ask for protection from both of these gods. It has the prefix pre which means before and script which means writing; so, a prescription has to be written before a drug is compounded.