n (chemistry) a process in which one substance permeates another; a fluid permeates or is dissolved by a liquid or solid
n (physics) the process in which incident radiated energy is retained without reflection or transmission on passing through a medium
the absorption of photons by atoms or molecules
n the social process of absorbing one cultural group into harmony with another
n the process of absorbing nutrients into the body after digestion
n complete attention; intense mental effort
n the mental state of being preoccupied by something
n a measure of the rate of decrease in the intensity of electromagnetic radiation (as light) as it passes through a given substance; the fraction of incident radiant energy absorbed per unit mass or thickness of an absorber