Denshi Jisho — Online Japanese dictionary

段階 だんかい grade; level; stage; class; phase; steps; order; gradation
Common word, Noun 
段階 きざはし 1: stairs;
2: stairs at the front of a noh stage
Noun 
段階 きだはし stairs
Out-dated or obsolete kana, Noun 
段階評価 だんかいひょうか (after number N) graded on N steps; scored out of N
Suffix 
段階的詳細化 だんかいてきしょうさいか stepwise refinement
Noun, Computer terminology 

You can also

Look up kanji details for 段階.

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