how to say “to digest” in Hebrew
לְעַכֵּל
A word of similar meaning is to digest – לְעַכֵּל 
listen and repeat, an active-intensive verb of the similar root ע.כ.ל (a.k.l). In Hebrew, it is used both literally and figuratively, as in:
listen and repeat, an active-intensive verb of the similar root ע.כ.ל (a.k.l). In Hebrew, it is used both literally and figuratively, as in:לָקַח לָהּ זְמַן לְעַכֵּל אֶת הַחֲדָשׁוֹת.
It took her time to take in (digest) the news.
The root first appears in Hebrew sources in the Mishnah, in the reflexive-intensive verb לְהִתְעַכֵּל listen and repeat – to become digested.
listen and repeat – to become digested.