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.
LX = Luxury. EX = Executive. Usually DX is the base model, LX has power windows and locks and other basic conveniences, and EX has a sunroof, alloy wheels, etc. etc. EX-L would indicate a leather interior.X = Executive. Usually DX is the base model, LX has power windows and locks and other basic conveniences, and EX has a sunroof, alloy wheels, etc. etc.