The word empirical denotes information gained by means of observation, experience, or experiment. A central concept in science and the scientific method's that all evidence must be empirical, or empirically based, that's, dependent on evidence or consequences that're observable by the senses. It's usually differentiated from the philosophic usage of empiricism by the use of the adjective "empirical" or the adverb "empirically." "Empirical" as an adjective or adverb's used in conjunction with bo… (More on Empirical)