1 a: the act of saturating: the state of being saturatedb:satiety, surfeit 2: conversion of an unsaturated to a saturated chemical compound (as by hydrogenation) 3: a state of maximum impregnation: as a: complete infiltration :permeationb: the presence in air of the most water possible under existent pressure and temperature c: magnetization to the point beyond which a further increase in the intensity of the magnetizing force will produce no further magnetization 4 a: chromatic purity : freedom from dilution with white b (1): degree of difference from the gray having the same lightness —used of an object color (2): degree of difference from the achromatic light-source color of the same brightness —used of a light-source color — compare hue 2c 5: the supplying of a market with as much of a product as it will absorb 6: an overwhelming concentration of military forces or firepower