Add :term:s for iterator.
diff --git a/Doc/library/dis.rst b/Doc/library/dis.rst
index 85c3030..58276da 100644
--- a/Doc/library/dis.rst
+++ b/Doc/library/dis.rst
@@ -674,10 +674,10 @@
.. opcode:: FOR_ITER (delta)
- ``TOS`` is an iterator. Call its :meth:`next` method. If this yields a new
- value, push it on the stack (leaving the iterator below it). If the iterator
- indicates it is exhausted ``TOS`` is popped, and the bytecode counter is
- incremented by *delta*.
+ ``TOS`` is an :term:`iterator`. Call its :meth:`next` method. If this
+ yields a new value, push it on the stack (leaving the iterator below it). If
+ the iterator indicates it is exhausted ``TOS`` is popped, and the bytecode
+ counter is incremented by *delta*.
.. % \begin{opcodedesc}{FOR_LOOP}{delta}
.. % This opcode is obsolete.