To Digest
To Use Up
する verb, transitive verb
You know how 消化 is "digestion"? Well, The verb form of that is this word, which is to digest.
If you know 消化 you should be able to read this. Also, it uses the readings you learned with the kanji anyways, so no problemo there.
これは消化するのに時間がかかると思うよ。
I think this will take some time to digest.
うちのネコは、いつも魚の皮をうまく消化できないんです。
My cat always struggles to digest fish skin properly.
まだ消化しづらいものはやめといた方がいいんじゃない？
You might want to avoid things that are hard to digest for now.