absorbing

To include so that it no longer has separate existence; to overwhelm; to cause to disappear as if by swallowing up; to incorporate; to assimilate; to take in and use up.

To engulf, as in water; to swallow up.

To suck up; to drink in; to imbibe, like a sponge or as the lacteals of the body; to chemically take in.

To take in energy and convert it, as

“Heat, light, and electricity are absorbed in the substances into which they pass.”

To engross or engage wholly; to occupy fully

To occupy or consume time.

Assimilate mentally.

To assume or pay for as part of a commercial transaction.

To defray the costs.

To accept or purchase in quantity.

Engrossing, that sustains someone's interest.

“An absorbing pursuit.”

(of a state) Allowing a process to enter it, but not to leave it.