what is biological absorption
Absorption. Definition. noun. (general) The act or process of absorbing or assimilating. (biology) The process of absorbing or assimilating substances into cells or across the tissues and organs through diffusion or osmosis, as in absorption of nutrients by the digestive system, or absorption of drugs into the bloodstream.elated terms: absorption band, absorption cell, atomic absorption spectrophotometry, cutaneous absorption, external absorption, linear absorption coefficient, specific absorption coefficient. Compare: adsorption.