To fill full or to excess; cause to be thoroughly penetrated or imbued; soak: as, to saturate a sponge with water; a mind saturated with prejudice.In chem., to impregnate or unite with till no more can be received: thus, an acid saturates an alkali, and an alkali saturates an acid, when the point of neutralization has been reached, and the mixture is neither acid nor basic in its character.In physics: To bring (a given space or a vapor) into a state of saturation. See saturation .To magnetize (a magnet) to saturation, or so that the intensity of its magnetization is the greatest which it can retain when not under the inductive action of a strong magnetic field.In optics, to render pure, or free from admixture of white light: said of colors.To satisfy.Saturated.In entomology, deep; very intense: applied to colors: as, saturate green, umber, black, etc.