n.
1.(chemistry) a process in which one substance permeates another
2.(physics) the process in which incident radiated energy is retained without reflection or transmission on passing through a medium
3.the social process of absorbing one cultural group into harmony with another
4.the process of absorbing nutrients into the body after digestion
5.complete attention
6.the mental state of being preoccupied by something
Idiom of the Day
on again, off again
to be unsettled or changeable or uncertain
The plans for the fireworks display were on again, off again because of the windy weather.