| 释义 |
ab·sorp·tion
\əbˈsȯrpshən, ab-, -ˈz-, -ȯ(ə)p-\ noun
(-s)
Etymology: French & Latin; French, from Latin absorption-, absorptio, from absorptus (past participle of absorbēre to absorb) + -ion-, -io -ion — more at absorb
1. : the process of absorbing or of being absorbed: as
a. obsolete : a swallowing up or engulfing (as of land due to subterranean movements)
b. : assimilation, incorporation
< absorption of immigrants >
< absorption of one railroad by another >
c. : a taking up by capillary, osmotic, chemical, or solvent action
< absorption of moisture from the air >
< absorption of gas by water >
< absorption of nourishment in the small intestine >
< absorption by plant roots of nutrients from the soil solution >
— distinguished from adsorption; compare sorption
d. : interception especially of light or sound waves
< the light of an average star in the Milky Way band … was dimmed through interstellar absorption — B.J.Bok >
< high absorption of certain types of wallboard >
2. : entire occupation of the mind
< absorption in his employment >
3. : the retention of electric polarization by some dielectrics for a measurable time after an exciting field has been removed — called also dielectric absorption
4. : the assumption by a freight carrier of special charges (as for switching) assessed by another carrier usually without increasing the rate charged the shipper
5. : reduction of power of radio waves through dissipation (as in the atmosphere) — compare attenuation 4 |