absorption

(noun) (chemistry) a process in which one substance permeates another; a fluid permeates or is dissolved by a liquid or solid. Synonyms: soaking up.

(noun) (physics) the process in which incident radiated energy is retained without reflection or transmission on passing through a medium. Example: "The absorption of photons by atoms or molecules."

(noun) the social process of absorbing one cultural group into harmony with another. Synonyms: assimilation.

(noun) the process of absorbing nutrients into the body after digestion. Synonyms: assimilation.

(noun) complete attention; intense mental effort. Synonyms: concentration, engrossment, immersion.

(noun) the mental state of being preoccupied by something. Synonyms: preoccupation, preoccupancy, engrossment.