To dilute a body is to render it liquid; or, if it were liquid before, to render it more so, by the addition of a thinner thereto. These things thus added are called diluents, or dilutors.

DIMACHÆ, (from δις double, and μάχη fight,) in antiquity, a kind of horsemanship, first instituted by Alexander. Their armour was lighter than that of the infantry, and at the same time heavier than that used by horsemen, so that they could act as horse or foot as occasion required.