suru verb (special), transitive verb
Only when written 食する
Formal or literary term for eating; not used in casual conversation. Often found in written language or polite contexts.
夕食を食する前に手を洗いましょう。
Let's wash our hands before eating dinner.
He quietly ate his breakfast.
suru verb (special), intransitive verb
to become eclipsed
Used for astronomical objects such as the sun or moon undergoing an eclipse. The kanji 蝕する is rare but specifically associated with this meaning.
今夜、月が蝕する。
The moon will be eclipsed tonight.