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.
hex (plural hexes) 1  A hexagonal space on a game board. ( 2 climbing) a hexagon-shaped item of rock climbing equipment intended to be wedged into a crack or other opening in the rock.