Denshi Jisho — Online Japanese dictionary

辞任 じにん 1: to resign;
2: (Noun) resignation
Common word, Suru verb 

You can also

Look up kanji details for 辞任.

Try a Yahoo Jisho search for 辞任 .
Try a Goo Jisho search for 辞任 .
Try a Google search for 辞任 .