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.
Rx in Technology Expand. A pattern matcher compatible with GNU regex, but generally faster. Version 0.05, released 1994-05-18, contained substantial changes from the version last distributed with GNU sed. These changes provide low-level support for searching across arbitrarily fragmented strings and suspendable searches.