diff --git a/pandas/core/frame.py b/pandas/core/frame.py
index 2cdb6d9b04341..920d9ad96c5b6 100644
--- a/pandas/core/frame.py
+++ b/pandas/core/frame.py
@@ -1925,7 +1925,7 @@ def _getitem_column(self, key):
         if self.columns.is_unique:
             return self._get_item_cache(key)
 
-        # duplicate columns & possible reduce dimensionaility
+        # duplicate columns & possible reduce dimensionality
         result = self._constructor(self._data.get(key))
         if result.columns.is_unique:
             result = result[key]