Add :term:s for iterator.
diff --git a/Doc/library/exceptions.rst b/Doc/library/exceptions.rst
index 1de0693..9fa5022 100644
--- a/Doc/library/exceptions.rst
+++ b/Doc/library/exceptions.rst
@@ -285,9 +285,10 @@
.. exception:: StopIteration
- Raised by an iterator's :meth:`next` method to signal that there are no further
- values. This is derived from :exc:`Exception` rather than :exc:`StandardError`,
- since this is not considered an error in its normal application.
+ Raised by an :term:`iterator`\'s :meth:`next` method to signal that there are
+ no further values. This is derived from :exc:`Exception` rather than
+ :exc:`StandardError`, since this is not considered an error in its normal
+ application.
.. versionadded:: 2.2