Definition of: linkage

(ling′kij) noun
1. The act of linking, or the state of being linked.
2. Mech. A series or system of links and connecting rods for transmitting power, especially as used in automotive vehicles.
3. Electr. A relation between a magnetic line of force and the conductive coil that forms its vehicle.
4. Biol. Inheritance of the kind in which the genes, usually in the same chromosome, tend to act together as a unit or linkage group in the general process of segregation.
5. A pantograph.