| 1. | the act of linking; state or manner of being linked. |
| 2. | a system of links. |
| 3. | Genetics. an association between two or more genes on a chromosome that tends to cause the characteristics determined by these genes to be inherited as an inseparable unit. |
| 4. | Machinery. an assembly of four or more rods for transmitting motion, usually in the same plane or in parallel planes. |
| 5. | a factor or relationship that connects or ties one thing to another; link: Administration officials sought to establish linkage between grain sales and relaxed immigration laws. |
| 6. | any of various mathematical or drawing devices consisting of a combination of bars or pieces pivoted together so as to turn about one another, usually in parallel planes. |
| 7. | Electricity. flux linkage. |
linkage link·age (lĭng'kĭj)
n.
An association between two or more genes such that the traits they control tend to be inherited together.