Absorption \Ab*sorp"tion\, n. [L. absorptio, fr. absorbere. See Absorb.]

1. The act or process of absorbing or sucking in anything, or of being absorbed and made to disappear; as, the absorption of bodies in a whirlpool, the absorption of a smaller tribe into a larger.

2. (Chem. & Physics) An imbibing or reception by molecular or chemical action; as, the absorption of light, heat, electricity, etc.

3. (Physiol.) In living organisms, the process by which the materials of growth and nutrition are absorbed and conveyed to the tissues and organs.

4. Entire engrossment or occupation of the mind; as, absorption in some employment.

Source: Webster's Revised Unabridged Dictionary (1913)