#7116: str.join() takes an iterable.
diff --git a/Doc/library/stdtypes.rst b/Doc/library/stdtypes.rst
index 25fda8f..b4f62ad 100644
--- a/Doc/library/stdtypes.rst
+++ b/Doc/library/stdtypes.rst
@@ -996,10 +996,11 @@
    For 8-bit strings, this method is locale-dependent.
 
 
-.. method:: str.join(seq)
+.. method:: str.join(iterable)
 
-   Return a string which is the concatenation of the strings in the sequence *seq*.
-   The separator between elements is the string providing this method.
+   Return a string which is the concatenation of the strings in the
+   :term:`iterable` *iterable*.  The separator between elements is the string
+   providing this method.
 
 
 .. method:: str.ljust(width[, fillchar])
diff --git a/Objects/stringobject.c b/Objects/stringobject.c
index 1233fc0..70d90d4 100644
--- a/Objects/stringobject.c
+++ b/Objects/stringobject.c
@@ -1814,10 +1814,10 @@
 
 
 PyDoc_STRVAR(join__doc__,
-"S.join(sequence) -> string\n\
+"S.join(iterable) -> string\n\
 \n\
 Return a string which is the concatenation of the strings in the\n\
-sequence.  The separator between elements is S.");
+iterable.  The separator between elements is S.");
 
 static PyObject *
 string_join(PyStringObject *self, PyObject *orig)
diff --git a/Objects/unicodeobject.c b/Objects/unicodeobject.c
index 2028d96..6eac358 100644
--- a/Objects/unicodeobject.c
+++ b/Objects/unicodeobject.c
@@ -7154,10 +7154,10 @@
 }
 
 PyDoc_STRVAR(join__doc__,
-             "S.join(sequence) -> unicode\n\
+             "S.join(iterable) -> unicode\n\
 \n\
 Return a string which is the concatenation of the strings in the\n\
-sequence.  The separator between elements is S.");
+iterable.  The separator between elements is S.");
 
 static PyObject*
 unicode_join(PyObject *self, PyObject *data)