Noun and する verb
りこん
「彼とは離婚するつもりなの。」「ちょっ…早まらないで。決断する前によく考えて。」
"I’m going to divorce him." "Don’t be so rash. Think carefully before you make a decision."
Detach from your marriage. This is a divorce.
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.