Dispersal is the process in which an organism spreads out geographically. Many dinosaurs dispersed over a large area. DISTAL Distal means farthest from the point of attachment to the body (compare with proximal, its opposite).

1) In biology: "Biological dispersal refers to a species movement away from an existing population or away from the parent organism. Through simply moving from one habitat patch to another, the dispersal of an individual has consequences not only for individual fitness, but also for population dynamics, population genetics, and species distribution. Understanding dispersal and the consequences on an ecosystem level requires understanding on the type of dispersal, the dispersal range of a given species, and the dispersal mechanisms involved." Source and further information: http://en.wikipedia.org/wiki/Biological_dispersal 2) In military tactic: "Force dispersal is the practice of spreading out soldiers and vehicles in an army. It is used to minimize the effects of collateral damage, such as from bombs and artillery, and increases the number of artillery rounds needed to neutralize or destroy a military force in proportion to the dispersal of the force. If a division doubles the area it takes up, it will double the number of artillery rounds needed to do the same damage to it. As more targets are spread out, more artillery and bombs are required to hit them all. It's also used on a squad level, notably in counter-insurgency, to minimize the effects of grenades, land mines, improvised explosive devices, explosive booby traps, and to a lesser extent automatic gunfire. When individual soldiers are spaced apart, it's much more difficult for a single grenade to incapacitate them all. Force dispersal may also be used in urban guerrilla warfare and as a tactic by militias to combat military intelligence instead of collateral damage. In this use, breaking up into covert cells is meant to make it harder to eliminate the whole organization at once, and to reduce the damage when portions of it are discovered." Source and further information: http://en.wikipedia.org/wiki/Force_dispersal